# www.oil-seal-stocks.com

## companyInformation

- **Name:** Oil Seal Stocks - Techniparts
- **Address:** Rondweg 26, 8091XB Wezep, the Netherlands
- **Phone:** +31382024043
- **Email:** info@oil-seal-stocks.com
- **KvK:** 08174024
- **BTW:** NL819296533B01

## Opening hours

- **Monday:** 08:15 - 17:15
- **Tuesday:** 08:15 - 17:15
- **Wednesday:** 08:15 - 17:15
- **Thursday:** 08:15 - 17:15
- **Friday:** 08:30 - 15:00
- **Saturday:** Closed
- **Sunday:** Closed

### Product categories

- [All Oil Seals](https://www.oil-seal-stocks.com/all-oil-seals/): Order Your Oil Seals in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal SC - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-sc-rotary-shaft-seal/): Order Your Oil Seal SC in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal TC - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-tc-rotary-shaft-seal/): Order Your Oil Seal TC in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal SB - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-sb-rotary-shaft-seal/): Order Your Oil Seal SB in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal TB - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-tb-rotary-shaft-seal/): Order Your Oil Seal TB in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal SA - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-sa-rotary-shaft-seal/): Order Your Oil Seal SA in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal TA - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-ta-rotary-shaft-seal/): Order Your Oil Seal TA in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal VC - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-vc-rotary-shaft-seal/): Order Your Oil Seal VC in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal KC - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-kc-rotary-shaft-seal/): Order Your Oil Seal KC in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal VB - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-vb-rotary-shaft-seal/): Order Your Oil Seal VB in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal KB - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-kb-rotary-shaft-seal/): Order Your Oil Seal KB in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal VG - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-vg-rotary-shaft-seal/): Order Your Oil Seal VG in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal KG - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-kg-rotary-shaft-seal/): Order Your Oil Seal KG in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal SC Plus - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-sc-plus-rotary-shaft-seal/): Order Your Oil Seal SC Plus in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal TC Plus - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-tc-plus-rotary-shaft-seal/): Order Your Oil Seal TC Plus in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal G10 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-g10-rotary-shaft-seal/): Order Your Oil Seal G10 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal G11 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-g11-rotary-shaft-seal/): Order Your Oil Seal G11 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal DC - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-dc-rotary-shaft-seal/): Order Your Oil Seal DC in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal DB - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-db-rotary-shaft-seal/): Order Your Oil Seal DB in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal TCN - Pressure Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-tcn-pressure-rotary-shaft-seal/): Order Your Oil Seal TCN - Pressure in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal N23 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-n23-rotary-shaft-seal/): Order Your Oil Seal N23 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal Q10 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-q10-rotary-shaft-seal/): Order Your Oil Seal Q10 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal Q13 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-q13-rotary-shaft-seal/): Order Your Oil Seal Q13 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal W10 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-w10-rotary-shaft-seal/): Order Your Oil Seal W10 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal PA31 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-pa31-rotary-shaft-seal/): Order Your Oil Seal PA31 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Oil Seal O18 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-o18-rotary-shaft-seal/): Order Your Oil Seal O18 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
- [Axial Seals](https://www.oil-seal-stocks.com/axial-seals/): Order Your Axial Seals in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent damage!
  - [Axial Seal AS-10](https://www.oil-seal-stocks.com/axial-seals/axial-seal-as-10/): Order Your Axial Seal AS-10 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent damage!
  - [Axial Seal AS-11](https://www.oil-seal-stocks.com/axial-seals/axial-seal-as-11/): Order Your Axial Seal AS-11 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent damage!
- [End Caps](https://www.oil-seal-stocks.com/end-caps/): Order Your End Caps in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and secure closure of bores!
  - [End Cap CS-12](https://www.oil-seal-stocks.com/end-caps/end-cap-cs-12/): Order Your End Cap CS-12 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and secure closure of bores!
  - [End Cap CS-10](https://www.oil-seal-stocks.com/end-caps/end-cap-cs-10/): Order Your End Cap CS-10 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and secure closure of bores!
- [Garlock® Seals](https://www.oil-seal-stocks.com/garlock-seals/): Order Your Garlock Seals in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Garlock PS-Lip Gylon®](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-lip-gylon/): Order Your Garlock PS-Lip Gylon in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Garlock PS-Seals](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-seals/): Order Your Garlock PS-Seals in Various Types, Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
    - [PS-Seal (Back to Back)](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-seals/ps-seal-back-to-back/): Order Your PS-Seal Back to Back in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
    - [PS-Seal (Dustlip)](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-seals/ps-seal-dustlip/): Order Your PS-Seal Dustlip in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
    - [PS-Seal (Reverse)](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-seals/ps-seal-reverse/): Order Your PS-Seal Reverse in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
    - [PS-Seal (Standard)](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-seals/ps-seal-standard/): Order Your PS-Seal Standard in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
    - [PS-Seal (Tandem)](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-seals/ps-seal-tandem/): Order Your PS-Seal Tandem in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Garlock PS-Static Seal Gylon®](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-static-seal-gylon/): Order Your PS-Static Seal Gylon in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
- [V-Rings](https://www.oil-seal-stocks.com/v-rings/): Discover top-quality V-rings and V seals at Oil-Seal-Stocks.com. Protect your machinery with our durable, high-performance sealing solutions. Shop now!
  - [V-rings Type VA](https://www.oil-seal-stocks.com/v-rings/v-rings-type-va/): Order Your V-Ring A10 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [V-rings Type VE](https://www.oil-seal-stocks.com/v-rings/v-rings-type-ve/): Order Your V-Ring E10 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [V-rings Type VL](https://www.oil-seal-stocks.com/v-rings/v-rings-type-vl/): Order Your V-Ring L10 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [V-rings Type VS](https://www.oil-seal-stocks.com/v-rings/v-rings-type-vs/): Order Your V-Ring S10 in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [VA FKM](https://www.oil-seal-stocks.com/v-rings/va-fkm/): Order Your V-Ring A10 in FKM (Viton®) and a variety of Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [VL FKM](https://www.oil-seal-stocks.com/v-rings/vl-fkm/): Order Your V-Ring L10 in FKM (Viton®) and a variety of Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [VS FKM](https://www.oil-seal-stocks.com/v-rings/vs-fkm/): Order Your V-Ring S10 in FKM (Viton®) and a variety of Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [VE FKM](https://www.oil-seal-stocks.com/v-rings/ve-fkm/)
- [Tools](https://www.oil-seal-stocks.com/tools/)
- [Domsel Oil Seals](https://www.oil-seal-stocks.com/domsel-oil-seals/): Order Your Domsel Oil Seals in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Domsel Seal A](https://www.oil-seal-stocks.com/domsel-oil-seals/domsel-seal-a/): Order Your Domsel Seal A in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Domsel Seal A-SF](https://www.oil-seal-stocks.com/domsel-oil-seals/domsel-seal-a-sf/): Order Your Domsel Seal A-SF in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Domsel Seal AB](https://www.oil-seal-stocks.com/domsel-oil-seals/domsel-seal-ab/): Order Your Domsel Seal AB in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Domsel Seal AC](https://www.oil-seal-stocks.com/domsel-oil-seals/domsel-seal-ac/): Order Your Domsel Seal AC in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Domsel Seal B](https://www.oil-seal-stocks.com/domsel-oil-seals/domsel-seal-b/): Order Your Domsel Seal B in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Domsel Seal B-SF](https://www.oil-seal-stocks.com/domsel-oil-seals/domsel-seal-b-sf/): Order Your Domsel Seal B-SF in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!
  - [Domsel Seal BC](https://www.oil-seal-stocks.com/domsel-oil-seals/domsel-seal-bc/): Order Your Domsel Seal BC in Various Materials and Sizes - Enhance Machine Performance with Our Versatile Sealing Solution. Buy now and prevent leaks!

## frequentlyAskedQuestions

### [Contact](https://www.oil-seal-stocks.com/contact/)

**Q: Is returning free?**
You can return a product from us within 14 days. The shipping cost for your returning products are unfotunatelly not free.

**Q: What is the status of my order**
Log in with your account and see the status My Account

**Q: Do you charge shipping costs?**
The shipping costs vary per country. We ship domestic for €9,75. Please check the shipping cost table for prices and transit time.

**Q: How can i track my order?**
We will send your a trackingcode. This code can be found on your e-mail account and on your account. My Account

**Q: How do I return a product?**
You can start your return process simply by logging into your account..  My Account
You can also call us on (+31)38-46012-32 or send us an e-mail to info@oil-seal-stocks.com so we can discuss what the best way is to return your product.

### [End Cap CS-10](https://www.oil-seal-stocks.com/end-caps/end-cap-cs-10/)

**Q: What is the difference between a CS-10 end cap and an oil seal?**
A CS-10 end cap completely closes a bore without a shaft passage and is static. An oil seal provides dynamic sealing around a rotating shaft.

**Q: Is a CS-10 end cap suitable for pressure applications?**
No, the end cap CS-10 is intended for static sealing at low or no pressure.

**Q: Can a CS-10 end cap be reused after removal?**
No, due to the press fit the end cap may deform during removal. Reuse is not recommended.

**Q: Which bore tolerance is required for installation?**
A bore with ISO tolerance H8 is recommended for reliable sealing.

**Q: Which material choice is suitable for high temperatures?**
For higher temperatures and aggressive media, FKM is the best choice.

**Q: Are CS-10 end caps maintenance-free?**
Yes, when correctly installed and applied, CS-10 end caps require no maintenance.

### [Domsel Oil Seals](https://www.oil-seal-stocks.com/domsel-oil-seals/)

**Q: What is the difference between Domsel type A and type B?**
Both are single-lip oil seals, but the lip orientation differs. You choose based on where the medium is and which side you want to seal (keeping in vs keeping out).

**Q: When do I choose a Domsel A-SF or B-SF?**
If installation space is limited or you want a more compact seal, the SF variants are logical. You keep the Domsel sealing principle, but in a design that fits more easily in tight housings.

**Q: What do you use Domsel type AC for?**
AC has two lips that work in opposite directions. This is useful when you want to seal on both sides or when you want to keep two media better separated around a single shaft passage.

**Q: Which material is the most “safe” if I’m unsure?**
For oil/grease at normal temperatures, NBR is usually the safe start. If temperature or chemical exposure becomes more demanding, FKM is often the logical upgrade. For hot water/steam, EPDM is usually more suitable than FKM.

**Q: Which data do I need to select the right Domsel oil seal?**
At minimum d1 (shaft), D (bore), and b (width), plus medium, temperature, speed, and any pressure. With that set you can substantiate both the type and the material choice.

### [Domsel Seal A](https://www.oil-seal-stocks.com/domsel-oil-seals/domsel-seal-a/)

**Q: What exactly is the Domsel Oil Seal A?**
The Domsel Oil Seal A is a high-performance rotary shaft seal (radial shaft seal) with one sealing lip, intended for sealing rotating shafts in machine-building applications.

**Q: What is the difference between oil seal A and Domsel Seal B?**
Both are part of the same domsel seals family, but A and B differ in lip orientation/application. You choose B when the lip orientation of A does not make sense with your medium side and installation.

**Q: When do I choose the Domsel Seal A-SF?**
If you want the same “A” logic, but have too little installation space and need a slimmer version.

**Q: Which materials are available for the Domsel Seal A?**
Within this category, NBR (Nitrile), HNBR, FKM/FPM (Viton®), EPDM, VMQ (Silicone), and FFKM are available.

**Q: Can the Domsel Oil Seal A handle high pressure and high speed?**
Yes, this type is designed for high performance, including pressures up to 15 bar and circumferential speeds up to 32 m/s, provided it is correctly selected and installed.

**Q: What should I pay attention to when determining the correct size?**
Measure d × D × b accurately, choose the material based on medium and temperature, and make sure fit, shaft condition, and installation (e.g., lead-in/chamfer) are correct to prevent leakage and premature wear.

### [Domsel Seal A-SF](https://www.oil-seal-stocks.com/domsel-oil-seals/domsel-seal-a-sf/)

**Q: What does “A-SF” mean at Domsel?**
A-SF is a Domsel design type within radial shaft seals, focused on a narrow design for tight installation and high-performance sealing.

**Q: When do I choose A-SF instead of a standard oil seal?**
When you have limited installation space, higher speeds or pressure, or when your current seal runs hot or starts leaking unstably.

**Q: Is Domsel A-SF suitable for higher pressure?**
A-SF is often chosen when pressure plays a role. The exact limit depends on size, design, installation, and operating conditions.

**Q: Which material is the most all-round?**
For oil and grease, NBR is often all-round. For higher temperatures and broader chemical resistance, FKM is usually the safe choice. The best choice still depends on your medium and cleaning.

**Q: Where does installation go wrong most often?**
With lip damage due to sharp edges, the wrong installation tool, insufficient lubrication during installation, or a shaft surface that is not suitable (too rough or with “twist”).

**Q: How do I prevent premature wear or leakage?**
By choosing the correct size from the Domsel size list, matching the right material to the medium and temperature, finishing the shaft running surface correctly, and installing the seal neatly without using penetrating sprays.

### [Domsel Seal AB](https://www.oil-seal-stocks.com/domsel-oil-seals/domsel-seal-ab/)

**Q: What is the difference between the Domsel AB and a standard rotary shaft seal?**
The Domsel AB does not use a spiral spring and features dual lips, resulting in lower friction, longer service life, and higher pressure resistance.

**Q: Can I use a Domsel AB for high-pressure applications?**
Yes, the standard version handles up to 10 bar, and special types like the AB-SF can handle up to 15 bar.

**Q: Which material should I choose for my application?**
Use NBR for oil and general-purpose use, FKM for high temperature and chemical exposure, EPDM for water or steam, and PTFE for highly aggressive chemical environments.

**Q: Are Domsel AB seals suitable for food industry use?**
Yes, many versions are FDA-compliant and available with stainless steel housings.

**Q: Will this seal damage my shaft?**
No, the sealing lip applies minimal pressure and does not create grooves in the shaft, even on unhardened surfaces.

**Q: How do I determine the correct size?**
Measure the shaft and housing diameters, and choose a seal that conforms to DIN 3760 tolerances. Also account for the required width and specific operating conditions.

### [Domsel Seal AC](https://www.oil-seal-stocks.com/domsel-oil-seals/domsel-seal-ac/)

**Q: What is the main purpose of a Domsel AC oil seal?**
The Domsel AC is designed to seal a rotating shaft while controlling both directions at once: it helps keep internal lubricants in place while preventing external contamination from entering, ideal for media separation.

**Q: What’s the difference between Domsel AC and Domsel AB?**
The AC has two lips facing opposite directions for separation and two-sided protection. The AB typically has two lips oriented in the same direction to strengthen sealing on one side (often chosen when the internal side is the priority, such as pressurized media).

**Q: Which material should I choose for oil and grease applications?**
NBR is commonly used for mineral oils and greases. If temperatures are higher or the medium is more chemically aggressive, FKM is often a better fit.

**Q: Is EPDM suitable for oil sealing?**
Generally no, EPDM is strong in water/steam and some cleaning environments, but it is often not compatible with oils and greases. Use EPDM when the sealed media and the environment make it the right match.

**Q: Do I need grease between the lips?**
In many double-lip setups, grease between the lips supports lubrication and can extend service life by reducing dry running risk. It’s a practical measure, especially in harsh environments or long service intervals.

**Q: How do I make sure I order the correct size?**
Measure shaft diameter, bore diameter, and seal width carefully, and confirm the housing/shaft condition and tolerances. Using standard dimension families (DIN 3760 / ISO 6194) helps, but always verify real hardware dimensions and surface finish.

### [Domsel Seal B](https://www.oil-seal-stocks.com/domsel-oil-seals/domsel-seal-b/)

**Q: What is the difference between Domsel type A and B seals?**
Type A has the lip facing the mounting direction (for internal sealing), while type B has the lip facing away from the mounting direction (for external sealing).

**Q: What pressure can the Domsel B seal handle?**
Up to approximately 10–15 bar, depending on the version and medium.

**Q: Can I use a Domsel B seal in the food industry?**
Yes, provided it is made of FDA-compliant material such as EPDM or silicone and preferably with a stainless steel casing.

**Q: How do I properly install a Domsel B seal?**
Ensure a clean, smooth shaft and housing, lightly grease the lip, and use a suitable installation tool to avoid damage.

**Q: Is the Domsel B seal suitable for both rotation directions?**
Yes, thanks to its design without pump grooves, it is insensitive to rotation direction.

**Q: When should I choose FKM instead of NBR?**
When dealing with higher temperatures (>100°C) or chemically aggressive media such as solvents or acids.

### [Domsel Seal B-SF](https://www.oil-seal-stocks.com/domsel-oil-seals/domsel-seal-b-sf/)

**Q: What is the biggest advantage of the B-SF oil seal compared to standard oil seals?**
The B-SF offers higher pressure resistance (up to 15 bar), lower friction, and a slimmer design, making it seal more reliably in compact or heavy-duty applications.

**Q: In which direction should I install the B-SF oil seal?**
Thanks to the symmetrical design, the B-SF can be installed in both directions. Choose the direction based on where the fluid or pressure side is located.

**Q: Is the B-SF suitable for dry applications?**
Not without additional lubrication. The lip always requires some lubrication (oil or grease) to prevent premature wear. For dry air applications, pre-greasing is necessary.

**Q: Can I use the B-SF at high rotational speeds?**
Yes, thanks to low friction the B-SF is suitable for high rotational speeds, up to approximately 32 m/s, depending on the material and the application.

**Q: How do I know which material I need?**
First determine the medium, temperature, pressure, and environment. If needed, consult the material comparison or contact us for advice.

**Q: Are FDA-compliant versions available?**
Yes, Domsel supplies B-SF oil seals with FDA-approved materials and a stainless-steel housing for applications in the food and pharmaceutical sectors.

### [Domsel Seal BC](https://www.oil-seal-stocks.com/domsel-oil-seals/domsel-seal-bc/)

**Q: What is the difference between a BC seal and a Domsel A-seal?**
The BC seal is intended to seal pressure from the outside, while the A-seal is used for pressure or medium from the inside. The lip is positioned in the opposite direction.

**Q: Can I use a Domsel BC oil seal at high pressure?**
Yes, as standard BC seals can handle pressure up to approximately 10 bar. With a reinforced version (for example with an extra ring) this can increase to 14–15 bar.

**Q: Which material should I choose for an environment with many chemicals?**
Fluoroelastomer (FKM) or PTFE is the most suitable in that case, depending on the exact medium. PTFE has the highest chemical resistance.

**Q: How do I know which size I need?**
Measure the shaft diameter and the bore diameter and check these against the standard DIN sizes. Domsel provides a sizing table to find the right seal.

**Q: Are Domsel oil seals suitable for dry running?**
Not as standard. Only the PTFE version is designed for dry running. Rubber versions (such as NBR or FKM) require lubrication.

**Q: Are food-grade versions available?**
Yes, Domsel supplies seals with FDA-compliant rubber and a stainless-steel housing for use in the food industry.

### [Garlock® Seals](https://www.oil-seal-stocks.com/garlock-seals/)

**Q: When do I choose a PS-SEAL and when a PS-Lip?**
A PS-SEAL is a complete, ready-to-mount solution (housing + lip + static seal). You choose a PS-Lip when you want the PTFE/GYLON sealing principle, but need or want to create the installation/construction yourself due to space, design choices, or serviceability.

**Q: What is the practical difference between Standard, Back-to-Back and Tandem?**
Standard is the basic version with one lip. Back-to-Back uses two lips in opposite directions (sealing to both sides), while Tandem places two lips in the same direction to create extra sealing margin in one direction.

**Q: Are Garlock PS-SEALs suitable for food/pharma and CIP/SIP?**
Yes, versions/materials are explicitly mentioned with FDA and (possibly) EN 1935/2004, and Garlock positions PS-SEALs specifically in food, beverage and pharma to handle repeated CIP/SIP cycles, provided you choose the right compound.

**Q: Which shaft/counterface requirements are really important for PS-SEALs?**
Surface finish and “machining marks” are crucial: Garlock states guideline values (Ra/Rz) and warns against helical marks due to a potential pumping effect. Under heavy loading, sufficient hardness helps and, if needed, an appropriate wear-resistant solution.

**Q: Can PS-SEALs replace a mechanical seal or packing?**
In many applications they are indeed used for that purpose as a more compact alternative, especially when you want to increase reliability with one robust lip-seal solution. Feasibility still depends on your p×v loading, temperature, medium and the quality of the counterface.

### [Garlock PS-Lip Gylon®](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-lip-gylon/)

**Q: Is the Garlock PS-Lip the same as a PS-SEAL?**
No. A PS-SEAL is typically a complete (ready-to-mount) unit. The PS-Lip is the loose, preformed lip (construction) that you use in your own housing/design.

**Q: What is the temperature range of the PS-Lip (GYLON®)?**
GYLON® (modified PTFE) is known for a wide temperature range. In practice, you should always take into account additional temperature from frictional heat, especially at higher speeds.

**Q: Can I use the PS-Lip under pressure?**
You can, but the limit depends on the design and application details. Don’t look only at pressure, but also at p×v, retention/fixation, and heat generation.

**Q: Which lip materials are suitable for food/pharma?**
Choose materials that explicitly match food-contact and compliance requirements. In practice, the “food-grade” variants are often used for this (such as White/Blue and some special compounds).

**Q: Why is the counterface so important for PTFE/GYLON lip seals?**
Because lip performance strongly depends on roughness, hardness, and machining marks. A poor counterface can cause leakage or accelerated wear, even if you choose the right lip material.

**Q: How do I determine the right size and fit?**
Start with shaft and bore dimensions and then design the fits and tolerances according to an ISO-like tolerance framework. Make sure the press fit, the static seal, and the installation method match your pressure, speed, and service requirements.

### [Garlock PS-Seals](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-seals/)

**Q: Can PS-SEALs replace a standard NBR/FKM oil seal?**
Yes, especially when pressure, speed, temperature, or medium fall outside the reliable range of elastomer lips.

**Q: When do I choose Back-to-Back instead of Tandem?**
Back-to-Back is for sealing to both sides; Tandem is for additional sealing stages in the same direction toward the medium.

**Q: Can a PS-SEAL also replace a mechanical seal or packing?**
In many applications it can, especially if you want a more compact and simpler solution with high operational reliability.

**Q: Are PS-SEALs also suitable under vacuum?**
Yes, vacuum resistance is one of the reasons to consider PS-SEALs in challenging process conditions.

**Q: Are PS-SEALs FDA-compliant?**
They can be, depending on the selected lip compound and execution, which makes them relevant for food and pharma applications.

### [PS-Seal (Back to Back)](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-seals/ps-seal-back-to-back/)

**Q: What does “back-to-back” mean for PS-SEAL?**
Back-to-back is designated by Garlock as an official PS-SEAL Non-Standard lip configuration. It refers to the 2 seals that are positioned “Back-to-Back”.

**Q: Is the PS-SEAL Back-to-Back suitable for high pressure?**
According to the datasheet, this version falls under PS-SEAL Non-Standard and can, depending on the version, go up to 25 bar; at higher pressure Garlock recommends a p×v check and axial fixation.

**Q: What is the temperature range of PS-SEAL lip materials?**
Garlock specifies a range of −90 °C to +260 °C for the lip materials, noting that frictional heat can increase the seal temperature.

**Q: Which lip materials are logical for food/pharma?**
Garlock mentions GYLON® White, GYLON® Blue, and F-econol as FDA and EN 1935 compliant options and recommends them for food/pharma/beverage.

**Q: What requirements does Garlock specify for the shaft and counterface?**
Garlock specifies Ra 0.1–0.4 μm, Rz 0.6–2.0 μm, Rmax 4 μm, no spiral marks, and a guideline value of 60 HRC; for p×v > 20 bar·m/s a chromium oxide coating is recommended.

**Q: Which tolerances/fits should you use as a baseline?**
The datasheet mentions, among other things, bore Ø H7 and shaft Ø h11 as baseline fits for the mounting interfaces.

### [PS-Seal (Dustlip)](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-seals/ps-seal-dustlip/)

**Q: What does the “Dustlip” do exactly?**
The Dustlip is an extra lip on the atmospheric side that helps keep dust/dirt/splash water away from the primary sealing lip.

**Q: Is the PS-SEAL (Dustlip) suitable for food/pharma?**
Yes, depending on the selected lip material. Garlock states the PS-SEAL can be used for food/pharma (FDA) and also mentions EN 1935/2004.

**Q: What is the maximum pressure?**
Garlock states: PS-SEAL Standard max. 145 psi (~10 bar) and Non-Standard max. 362 psi (~25 bar) (depending on the version). Dustlip falls under Non-Standard.

**Q: Can this seal also run in vacuum?**
Yes, the PS-SEAL is intended for high pressure as well as (extreme) vacuum; moreover, there is lip material (e.g., F Econol) that is explicitly described as suitable for vacuum applications.

**Q: What requirements apply to the shaft (counterface)?**
Guidelines: Ra 0.1–0.4 μm, no spiral machining marks, and approximately 60 HRC hardness.

**Q: Do I need to do anything extra at higher pressure?**
For maximum pressure applications: check p×v and Garlock advises axial retention of the PS-SEAL when used under high pressure.

### [PS-Seal (Reverse)](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-seals/ps-seal-reverse/)

**Q: What does “Reverse” mean on a PS-SEAL?**
It means the sealing lip points outward, towards the media (“single lip points out of the housing towards the media”).

**Q: Why is the Reverse variant popular in food & pharma?**
Because the reverse lip configuration can reduce dead space by almost 80%, which makes cleaning easier and reduces contamination risk; in addition, there are lip materials with FDA/EC 1935 options.

**Q: Can a PS-SEAL Reverse replace a mechanical seal?**
Sometimes: Garlock positions PS-SEAL as cost-effective and practical and states it can be an alternative to mechanical seals and braided packings, but it depends on pressure, p×v, media and zero-leakage requirements.

**Q: What are the pressure and temperature limits?**
The brochures mention roughly -90 °C to +260 °C for PS-SEAL lip materials, with the note that friction can generate additional heat; in terms of pressure, it is stated among other things: Standard max. 10 bar and Non-Standard max. 25 bar (depending on version); always check p×v and the application.

**Q: Which lip materials make the most sense if (partial) dry running may occur?**
Garlock mentions, among other things, GYLON Blue (strong in dry running), Material F (Ekonol-based) (specifically for dry running, also at higher speed) and Material MS (dry running in abrasive powder/dust environments).

**Q: Which tolerances/surfaces are important to prevent leakage?**
Follow the specified fits such as d2 H8 and d1 h11, avoid helical/spiral marks on the shaft (pumping effect), and install without lip damage (do not install over sharp edges; mounting paste helps).

### [PS-Seal (Standard)](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-seals/ps-seal-standard/)

**Q: When should I choose a PS-SEAL Standard instead of a standard oil seal?**
When you need more margin at higher speed, (medium) high pressure, aggressive/abrasive media, or extreme temperatures, and your main goal is to increase reliability and service life.

**Q: Can a PS-SEAL Standard replace a mechanical seal?**
In some applications yes, especially if you stay within the PS-SEAL’s operating range and want to avoid the complexity of a mechanical seal. For very high pressure or “zero leakage” requirements, a mechanical seal often remains the more logical choice.

**Q: How important is shaft surface finish for a PS-SEAL?**
Very important: PTFE lips are less forgiving than rubber. Proper roughness, sufficient hardness, and avoiding spiral marks help prevent leakage and accelerated wear.

**Q: Which lip variant should I choose for food & pharma?**
Usually a food-grade variant (e.g., White/Blue/Brown-White/F), depending on cleaning regime, medium, speed, and any abrasion. The “standard” base design is not automatically the right choice for compliance.

**Q: Is the PS-SEAL suitable for (partial) dry running or limited lubrication?**
It can be, but it depends strongly on lip material selection and counterface quality. In those cases you want a compound known for good dry-running properties and you need to keep pv loading under control.

**Q: What should I pay attention to regarding dimensions and tolerances?**
Make sure d/D/B are correct, the press fit in the bore is reliable, and the shaft size and roundness are within common tolerances. If in doubt, it is smarter to validate the fit and counterface first than to install it “on a hunch.”

### [PS-Seal (Tandem)](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-seals/ps-seal-tandem/)

**Q: What is the advantage of a Tandem PS-SEAL compared to the Standard?**
The Tandem has two lips in the same direction, giving you extra sealing reserve and, above all, greater operational reliability (the second lip acts as an additional barrier).

**Q: Is the PS-SEAL Tandem suitable for food & pharma?**
Yes, provided you choose the right materials (e.g., GYLON® White/Blue and, where necessary, a suitable static sealing element).

**Q: Can a PS-SEAL Tandem handle higher pressure than a normal oil seal?**
Yes. A PS-SEAL is designed for conditions where elastomer oil seals fall short, including (medium) high pressure. The exact limit depends on size, compound, and operating conditions.

**Q: When do I choose Tandem and when Back-to-Back?**
Choose Tandem if you want extra security or extra sealing reserve in one direction. Choose Back-to-Back if you want to seal in two directions or separate media.

**Q: What shaft/housing finish do I need?**
Use neat press fits, correct tolerances (typically H8/h11) and, above all, a good shaft surface (smooth, burr-free, without spiral patterns), so the PTFE lips seal stably and are not damaged.

**Q: What is a common installation mistake?**
Damaging the lip when installing over a sharp edge (keyway, thread, burr) or pressing the seal into the housing at an angle. Use an installation sleeve/guide and work cleanly and straight.

### [Garlock PS-Static Seal Gylon®](https://www.oil-seal-stocks.com/garlock-seals/garlock-ps-static-seal-gylon/)

**Q: Is the PS-Static Seal a flat gasket?**
Yes, it is a flat, ring-shaped seal designed for static use between two surfaces.

**Q: Can I reuse the PS-Static Seal?**
No, reuse is not recommended. The material deforms upon removal and may lose its sealing performance.

**Q: What is the temperature range of Gylon?**
Depending on the Gylon type, the range is -200°C to +260°C. Viton is suitable up to approx. +200°C.

**Q: When should I choose Gylon versus FKM?**
Gylon is ideal for chemical resistance and temperature tolerance. FKM is better for oils, fuels, and elastic sealing needs.

**Q: Are these seals suitable for the food industry?**
Yes, Gylon Blue and White are FDA compliant and suitable for food and pharmaceutical applications.

### [Oil Seal SC - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-sc-rotary-shaft-seal/)

**Q: What is the difference between an SC and a TC oil seal?**
An SC oil seal has a single spring-loaded sealing lip and no dust lip, making it ideal for clean and enclosed systems. A TC oil seal includes a secondary dust lip for protection against contamination, but comes with slightly higher friction and heat generation due to its dual-lip design.

**Q: Can SC oil seals handle high pressure?**
SC oil seals are not designed for pressurized systems and should only be used in applications with low or near-zero system pressure. If low pressure is present, it must remain within the manufacturer’s recommended range. For higher pressure applications, specially designed high-pressure shaft seals ...

**Q: What housing bore conditions are suitable for SC seals?**
SC seals perform well in standard housings as long as ISO H8 tolerances are maintained. Their elastomer-coated OD allows proper sealing even in housings with minor surface roughness, thermal expansion (e.g., light-metal housings), or when split housings are used.

**Q: Which materials are recommended for SC seals?**
The most common material is NBR for general lubrication and mineral oil compatibility. FKM, HNBR, Silicone (VMQ), ACM, and EPDM are available for higher temperatures, synthetic media, or chemically aggressive fluids. The correct material depends on temperature, lubrication type, chemical exposure, a...

**Q: When should I choose an SC oil seal instead of a double-lip design?**
Choose an SC profile when you need low friction, low heat generation, and long service life in a clean, enclosed system without external contamination. Dual-lip designs such as TC or TB are better suited for dusty, wet, or abrasive environments where additional exclusion capability is needed.

### [Oil Seal TC - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-tc-rotary-shaft-seal/)

**Q: What is a TC oil seal? **
A TC type oil seal is a double-lip rotary shaft seal designed to keep lubricants inside a machine while blocking dust, dirt and moisture from entering. It has a spring-loaded main lip for oil retention and a secondary dust lip for contamination protection.

**Q: What is the difference between a TC and an SC oil seal?**
A TC oil seal has two lips (main lip + dust lip), making it better for dirty or outdoor environments. An SC oil seal has only one lip, so it is mainly used in clean, indoor applications where contamination is low.

**Q: What is the difference between TC and TB oil seals?**
Both TC seals and TB seals are double-lip designs, but the TC seal type has a rubber-coated outer diameter, which provides better static sealing, especially in aluminum housings or housings affected by thermal expansion. TB seals usually have a metal outer case.

**Q: How much pressure can a TC oil seal handle?**
TC type rotary shaft seals are made for low-pressure applications. They can typically handle up to 0.05 MPa (about 0.5 bar). If the system has higher pressure, a high-pressure seal or a different design is required.

**Q: Should I choose NBR or FKM for a TC seal?**
Choose NBR when you work with mineral oils and normal temperatures (up to around 100°C). Choose FKM (Viton) for higher temperatures, synthetic oils, or chemical exposure. FKM versions last longer in hot or aggressive environments.

### [Oil Seal VC - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-vc-rotary-shaft-seal/)

**Q: Does the VC rotary shaft seal have one lip or two? **
The oil seal VC type has one non-spring-loaded sealing lip.

**Q: When do you choose a non-spring-loaded oil seal?**
When low friction is desired and the application does not involve high pressure or heavy dynamic loads.

**Q: Is an oil seal VC suitable for synthetic lubricants?**
Yes, if made from compatible materials like FKM.

**Q: What is the difference between VC, KC and SC**
VC is a single non-spring-loaded sealing. The KC oil seal is almost the same but with an added dust lip. The oil seal SC is also comparable to the VC type seal but that one has a spring-loaded main lip.

**Q: How do you install a VC rotary shaft seal the right way?**
Lightly lubricate the lip, press the seal straight into the housing without tilting, and ensure the shaft surface meets recommended roughness and alignment requirements.

### [Oil Seal KC - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-kc-rotary-shaft-seal/)

**Q: What makes the oil seal KC different from a TC oil seal?**
The KC rotary shaft seal does not have a garter spring around the main sealing lip, unlike the TC type oil seal. This means it creates less friction but also cannot retain pressure. The oil seal KC is ideal for grease-filled, low-speed applications without internal pressure buildup.

**Q: Can I use a KC seal with oil instead of grease?**
Yes, if the oil is viscous enough and there is no pressure present in the system. For applications that use thin oils under pressure, spring-loaded seals like the TC rotary shaft seals are recommended.

**Q: Is the KC type suitable for vertical shafts?**
Yes, as long as there is no pressure and the lubricant does not drain away downwards due to gravity. The right installation and lubrication of the lips is essential.

**Q: How should I install a KC oil seal?**
Make sure the shaft and the housing are clean and undamaged. Slightly lubricate both sealing lips and the space between with a suitable lubricant. Push the seal evenly in the housing without deforming the rubber outer shell. Do not hammer the seal directly.

**Q: When should I not use a KC type?**
Don’t use an oil seal KC in applications with internal pressure, high rotation speed or very thin lubricants. In such situations you should choose an oil seal with a spring-loaded main sealing lip and in some cases even a metal outer diameter. In some aggressive applications you should choose materi...

### [Oil Seal SB - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-sb-rotary-shaft-seal/)

**Q: What is the main difference between an SB oil seal and an SC seal?**
The SB oil seal has a complete steel outer shell, while the SC seal uses a rubber-coated OD. SB is preferred for metal housings requiring precise press-fit and mechanical stability.

**Q: Can the SB oil seal handle pressure?**
Only low pressure. The oil seal SB is designed for applications up to approx. 0.5 bar. Higher pressure requires specialized high-pressure seals.

**Q: Is an SB oil seal suitable for high speeds?**
Yes, especially in FKM material. The steel OD maintains housing stability in high-speed rotor seal environments.

**Q: Is a dust-lip version available?**
Yes, the TB rotary shaft seal (same metal OD but with an added dust lip) is used when dirt exclusion is crucial.

### [Oil Seal TB - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-tb-rotary-shaft-seal/)

**Q: In which applications are TB oil seals most effective?**
TB oil seals are commonly used in gearboxes, motors, pumps, and agricultural machinery. Their robust construction and dual-lip configuration make them ideal for dusty or wet conditions where reliable shaft sealing is essential.

**Q: How do I install a TB oil seal correctly?**
Installation of an oil seal TB requires clean, burr-free shaft and housing surfaces. Align the seal carefully with the shaft axis and use even pressure to avoid distortion. Follow ISO tolerance standards for optimal fit and function.

**Q: Can I use TB seals in high-speed applications?**
Yes, but it's important to consult standard rotary shaft seal speed charts. Excessive speed can generate heat, which affects material selection (e.g., using FKM instead of NBR for better thermal resistance).

**Q: Are TB oil seals interchangeable with other rotary oil seals?**
Yes, rotary oil seals with similar profiles and dimensions, such as CRWA1 or B1SL, can often serve as functional equivalents. However, always check cross-reference charts and application specs to ensure compatibility.

**Q: Why choose a metal-cased seal over a rubber-cased one?**
A metal-cased TB oil seal is more rigid and suitable for precise housing bores. It also performs better in environments with temperature fluctuations or mechanical vibration, where a stable fit is essential.

**Q: What is the difference between a TB type oil seal and other rotary shaft seals?**
The TB type oil seal has a metal outer diameter and a double lip design, distinguishing it from TC seals (rubber-coated) and SB seals (single-lip). This makes it better suited for applications requiring a tight metal-to-metal interference fit and enhanced protection against contamination.

### [Oil Seal VB - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-vb-rotary-shaft-seal/)

**Q: Can a VB oil seal handle pressure?**
No. A VB seal is designed for pressureless applications. It retains grease or oil but is not suitable for system pressure.

**Q: What is the difference between a VB and a VC oil seal?**
A VB seal has a metal outer diameter, while a VC seal features a rubber-coated OD. VB is more rigid; VC provides better static sealing in softer housings.

**Q: Why does a VB seal not use a spring?**
The springless design reduces friction and heat generation, allowing the seal to perform efficiently at consistent rotational speeds.

**Q: Which materials are most commonly used for VB oil seals?**
Typically NBR for standard oils and greases, and FKM for higher temperatures or chemically aggressive lubricants.

**Q: Are VB oil seals suitable for dirty environments?**
No. Because they lack a dust lip, VB seals are not suitable for mud, sand or abrasive particles. They perform best in clean or internal housings.

### [Oil Seal KB - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-kb-rotary-shaft-seal/)

**Q: Can a KB seal handle internal pressure?**
No, KB oil seals are specifically designed for pressureless systems. They rely on rubber elasticity for sealing force and are not equipped to withstand internal pressure. For pressurized applications, a spring-loaded seal such as the TB type is recommended.

**Q: What is the main difference between KB and KC oil seals?**
While both KB and KC seals feature a dual-lip design without a spring, their outer diameters differ. The KB has a metal outer shell, providing a firm press-fit in precisely machined housings. The KC, with its rubber-coated OD, is more suitable for housings with irregular surfaces or made from light ...

**Q: Is the KB oil seal reusable?**
Reusing a KB oil seal is not recommended. Once removed, the sealing lips may deform, compromising the integrity of the seal. For optimal performance, a new seal should always be installed.

**Q: What materials are available for KB seals?**
Standard options include NBR for general oil resistance. For higher temperatures or chemical exposure, materials like FKM, HNBR, or silicone rubber can be used. Stainless steel or coated housings are also available for specific environments.

**Q: Can I use a KB seal with synthetic lubricants?**
Yes, but compatibility must be confirmed for the specific lubricant and seal material combination. For newer synthetic oils without broad field data, testing under real conditions is advised before full-scale deployment.

### [Oil Seal SA - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-sa-rotary-shaft-seal/)

**Q: What is the oil seal SA most suitable for?**
It’s suitable for clean industrial environments where internal lubrication must be retained without exposure to external contamination.

**Q: Does the SA oil seal contain a dust lip? **
No, the oil seal SA is a single lip sealing without a dust lip.

**Q: Is a metal outer shell better than an elastomer outer shell?**
A metal outer case provides a rigid and precise interference fit, especially in metal housings or applications with high loads or vibration.

**Q: Can an oil seal SA be used at high-speed applications?**
Yes, provided the correct material is selected. FKM offers improved heat resistance at higher speeds.

**Q: How to install an SA rotary shaft seal the right way? **
Ensure the shaft and housing are clean, burr-free, and within tolerance. Press the seal in evenly without damaging the lip or metal case. Always lubricate the sealing lip with compatible oil or grease before installation to prevent initial dry running and ensure proper seating of the seal.

### [Oil Seal TA - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-ta-rotary-shaft-seal/)

**Q: What’s the difference between a TA Oil Seal and a TC Oil Seal?**
A TA oil seal contains a fully metal outer diameter and a reinforced metal cap, whilst on the other hand, the TC seal has a rubber coated outer shell. This makes the TA type stiffer and more suitable for rigid metal housings, while the TC offers more compression and flexibility in less rigid housing...

**Q: When do you choose for a metal-OD seal like the TA? **
You should choose for a metal-OD seal when the housing is fully made from metal, and the application requires a tight and stable fit which doesn’t deform during installation. This is especially important is systems with vibrations, higher radial loads or larger shaft diameters.

**Q: Is the Oil Seal TA suitable for contaminated applications? **
Yes, the TA design has an integrated dust lip that protects the primary sealing lip from dust, dirt and moisture, making it suitable for equipment operating in dirty or humid conditions.

**Q: Which materials are available for the Oil Seal TA?**
The TA rotary shaft seal is available in NBR, FKM, VMQ, ACM, EPDM and HNBR. Each of these materials have their own strengths like heat resistance, wear resistance or low temperature flexibility.

**Q: How important is the condition of the shaft surface for TA Oil Seals?**
Extremely important. The correct surface roughness, hardness and finish help to keep a steady lubrication film and reduce wear. A bad finishing of the shaft surface could lead to leakage, heat build-up and quicker degradation of the sealing lip.

### [Oil Seal DC - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-dc-rotary-shaft-seal/)

**Q: What is a DC oil seal used for?**
For separating two media on rotating shafts using a single seal.

**Q: Does an oil seal DC have a dust lip?**
No, both lips are active sealing lips with spring support.

**Q: Can a DC oil seal seal pressure?**
No, it is designed for pressureless applications up to approximately 0.02 MPa.

**Q: Why is the outer diameter rubber-coated?**
To ensure reliable static sealing, compensate for tolerances, and prevent fretting corrosion.

**Q: Is the DC oil seal suitable for light-metal housings?**
Yes, the elastomer coating makes it particularly suitable for such housings.

### [Oil Seal DB - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-db-rotary-shaft-seal/)

**Q: What is the main difference between a DB oil seal and other oil seal types?**
A DB rotary shaft seal features two spring-supported, actively sealing lips and is designed to separate two different media, whereas most other oil seals are intended to seal only a single medium.

**Q: Is an oil seal DB suitable for pressurized applications?**
No. DB oil seals are designed for pressureless or very low-pressure applications, typically up to 0.02 MPa.

**Q: Why does a DB oil seal have a metal outer diameter?**
The metal outer diameter provides high dimensional stability and ensures a precise, rigid press fit in the housing, particularly beneficial for larger diameters and mechanically demanding applications.

**Q: Can a DB oil seal be used in aluminum housings?**
Yes, but caution is required. In light-metal or rough housings, additional sealing at the outer diameter may be necessary, such as using a sealing compound or a coated outer surface.

**Q: Which media can be sealed with a oil seal DB?**
Depending on the elastomer material, DB oil seals are suitable for mineral oils, many synthetic lubricants, greases, and other specific media, provided material compatibility is confirmed.

**Q: When is a DB oil seal not the right choice?**
A DB rotor seal is not suitable for applications involving higher pressures, high circumferential speeds, or housings that do not meet the required surface finish and tolerance specifications.

### [Oil Seal SC Plus - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-sc-plus-rotary-shaft-seal/)

**Q: What is the difference between an SC Plus and a standard SC seal?**
The primary difference between the SC and SC Plus lies in the construction of the metal reinforcement ring. In the SC Plus, this ring is fully encapsulated in elastomer, offering superior protection against corrosion and ensuring a more secure static seal.

**Q: Can I use an SC Plus instead of a TC Plus?**
Only if the application is in a clean, enclosed environment. The SC Plus has no dust lip, making it less suitable for conditions with external dirt, mud, or moisture. In those cases, a TC Plus is the better choice.

**Q: What is the maximum temperature the SC Plus oil seal can handle?**
The standard SC Plus with a Viton sealing lip can handle continuous temperatures up to 160°C, with peaks up to 200°C depending on the load and lubricant used.

**Q: What tolerances should I follow during installation?**
For optimal performance, use ISO h11 for the shaft and ISO H8 for the housing bore. Also ensure proper surface roughness and avoid dry running during initial rotation.

**Q: Is the SC Plus suitable for pressurized applications?**
No, the SC Plus is designed for non-pressurized applications or very light pressure up to a maximum of 0.05 MPa (0.5 bar). For higher pressure applications, special sealing types are required.

### [Oil Seal TC Plus - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-tc-plus-rotary-shaft-seal/)

**Q: What is the advantage of a TC Plus compared to a regular TC seal?**
The TC Plus uses superior materials (such as Viton and stainless steel) and has a fully rubber-encapsulated reinforcement ring, making it far more resistant to heat, chemicals, and corrosion.

**Q: Can I use a TC Plus for high-pressure applications?**
No. Standard TC Plus seals are not designed for pressures above 0.05 MPa. For high-pressure applications, TCN or PTFE-based seals are required.

**Q: In which applications is a TC Plus ideal?**
Agricultural machinery, construction equipment, industrial pumps, motors, gearboxes, and transport applications where contamination, moisture, and high temperatures are common.

**Q: Which material should I choose for my oil seal?**
That depends on temperature, medium, and environment. NBR is standard, FKM is for heat and chemicals, HNBR is for wear resistance, and Silicone is for low-temperature conditions.

**Q: What happens if I choose the wrong material?**
The seal may harden, crack, or swell, leading to leakage and potential machine damage. Always select based on technical requirements.

### [Oil Seal G10 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-g10-rotary-shaft-seal/)

**Q: What’s the difference between a G10 and a G11 oil seal? **
The G10 has a single sealing lip and is suited for cleaner environments. The G11 adds a secondary dust lip, offering extra protection in dirty or abrasive conditions.

**Q: How much heat can a G10 seal handle? **
When made from NBR, it’s rated up to 100°C. If built with FKM, it can withstand temperatures up to 200°C.

**Q: Is the G10 suitable for sealing gases? **
Yes, it performs well with light, gas-like media if no pressure is involved. For pressurized gas, a different seal design is required.

**Q: What’s the purpose of the ribbed outer surface? **
It improves grip and sealing against the housing, particularly in housings with rough surfaces or thermal movement.

**Q: Can I use the G10 in aluminum housings? **
Absolutely. Its rubber ribs conform well to aluminum’s thermal expansion, maintaining a tight seal even under fluctuating temperatures.

**Q: Which material is best for high-speed shafts?**
Materials like FKM perform better under high-speed conditions due to their superior resistance to frictional heat compared to standard NBR.

### [Oil Seal G11 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-g11-rotary-shaft-seal/)

**Q: What is a G11 oil seal used for?**
Een G11 oil seal wordt gebruikt om olie of vet af te dichten rond roterende assen en tegelijkertijd externe vervuiling buiten te houden in drukloze toepassingen.

**Q: What is the difference between a G10 and G11 oil seal?**
Het verschil zit in de stoflip: de G11 heeft een extra stoflip, terwijl de G10 alleen een veerondersteunde afdichtlip heeft.

**Q: Is a G11 oil seal suitable for pressure applications?**
Nee, de G11 is bedoeld voor drukloze toepassingen en kan slechts een zeer lage druk aan (maximaal circa 0,05 MPa).

**Q: Which material should I choose for a G11 oil seal?**
Dat hangt af van temperatuur en medium. NBR is geschikt voor standaard oliën, terwijl FKM of HNBR beter zijn bij hogere temperaturen of agressievere media.

**Q: Can a G11 oil seal handle rough housings?**
Ja, de geribbelde elastomeer buitendiameter maakt de G11 geschikt voor behuizingen met verhoogde ruwheid of thermische uitzetting.

**Q: What standards are important when selecting a G11 oil seal?**
Belangrijke normen zijn onder andere ISO h11 voor de as en ISO H8 voor de behuizing, evenals correcte eisen aan oppervlakteafwerking.

### [Oil Seal VG - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-vg-rotary-shaft-seal/)

**Q: Why does the VG seal have a ribbed elastomer outer diameter?**
The ribbed OD improves static sealing, compensates for thermal expansion and allows installation in rough or split housings.

**Q: Is the VG oil seal suitable for light-metal housings?**
Yes. Its ability to adapt to thermal expansion makes it especially suitable for aluminium and other light-metal housings.

**Q: What is the maximum operating temperature for the standard VG seal?**
For NBR 70, the operating temperature range is –40°C to +100°C. For synthetic lubricants without prior application data, the temperature should not exceed 80°C.

**Q: What is the permissible shaft speed for a VG oil seal?**
The maximum circumferential speed is 6 m/s under correct lubrication and shaft surface conditions.

**Q: What shaft conditions are required for optimal sealing?**
The shaft must meet ISO h11 tolerances, have a minimum hardness of 45 HRC and a surface finish of Ra 0.2–0.8 μm.

**Q: When should materials like FKM or silicone be chosen?**
Choose FKM for high temperatures or aggressive lubricants, and silicone for very low-temperature applications or systems exposed to thermal fluctuations.

### [Oil Seal KG - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-kg-rotary-shaft-seal/)

**Q: What is the difference between a KG seal and a standard oil seal?**
A KG seal is springless and has a double lip with a dust lip, making it ideal for grease sealing in pressure-free systems. Standard oil seals usually contain a garter spring and are designed for applications involving higher pressures.

**Q: Can I use a KG oil seal at high speeds?**
It can be used up to approximately 6 m/s. For higher speeds, spring-loaded seals or PTFE lip seals are more suitable.

**Q: What does OS-G13 mean?**
OS-G13 is an alternative designation for the KG seal with a ribbed outer diameter. OS-A13 refers to the smooth-outer-diameter variant.

**Q: Is the KG seal suitable for aluminum housings?**
Yes. The ribbed rubber outer diameter compensates for thermal expansion and surface irregularities, making it ideal for aluminum housings.

**Q: Should I apply grease between the sealing lips?**
Yes. Applying grease between the primary lip and dust lip extends the service life of the seal and reduces friction during start-up.

### [Oil Seal TCN - Pressure Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-tcn-pressure-rotary-shaft-seal/)

**Q: When should a TCN be chosen instead of a TC?**
When internal pressure is present and a standard TC oil seal does not provide sufficient sealing.

**Q: Can the oil seal TCN operate permanently under pressure?**
Yes, provided that rotational speed, shaft diameter and heat dissipation remain within the specified limits.

**Q: Is a TCN suitable for high speeds?**
No, at high rotational speeds the pressure capacity decreases significantly.

**Q: Can the oil seal TCN seal low-viscosity or gaseous media?**
Yes, at low pressure and low speed this is possible due to the stable lip design.

**Q: Are TCN oil seals suitable for aluminum housings?**
Yes, the elastomer-coated outer diameter makes them particularly suitable for this type of housing.

**Q: When is another sealing solution more appropriate?**
At high rotational speeds, very high pressures or extreme combinations of both, a different sealing concept is required.

### [Oil Seal N23 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-n23-rotary-shaft-seal/)

**Q: Is the N23 suitable for high pressure?**
Yes, the N23 oil seal is designed for pressure-loaded applications and can withstand significantly higher pressure than standard oil seals, depending on size and speed.

**Q: Does the oil seal N23 have a dust lip?**
No, the N23 rotor seal has a single sealing lip and no separate dust lip. This reduces friction but offers less protection against external contamination.

**Q: When should I choose NBR and when FKM?**
NBR is suitable for standard oil and grease applications up to approximately 100 °C. FKM is chosen for higher temperatures or aggressive media.

**Q: Can I use the N23 oil seal in aluminum housings?**
Yes, the rubber-coated outer diameter makes the oil seal N23 very suitable for aluminum or other light-metal housings.

**Q: What happens if the shaft surface finish is incorrect?**
A shaft that is too rough or damaged will almost always lead to leakage or rapid wear, even with a high-pressure oil seal such as the N23

### [Oil Seal O18 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-o18-rotary-shaft-seal/)

**Q: Can I use an O18 instead of a standard SC oil seal?**
Only if the sealing scenario matches. The SC is intended for inside sealing (rotating shaft, stationary housing), whereas the O18 is specifically designed for outside sealing, often on a stationary shaft with a rotating housing. Always first check which component rotates and in which direction you n...

**Q: Is the O18 suitable for applications with system pressure?**
No, the O18 is designed for non-pressurised or lightly pressurised applications up to around 0.05 MPa. For true high-pressure applications you need a special high-pressure seal or a different sealing concept.

**Q: Which material should I choose for my O18 oil seal?**
For standard oil and grease applications, NBR is usually the best choice. At higher temperatures or when working with synthetic oils and fuels, you will quickly end up with FKM or HNBR. Always start from the medium and the temperature and then choose the elastomer.

**Q: What if my shaft is too rough or too soft?**
An overly rough shaft damages the sealing lip and increases the risk of leakage. If the shaft is too soft (below approx. 45 HRC), the running surface wears in quickly and the seal loses its preload. In both cases, the service life of the O18 decreases significantly.

**Q: Can the O18 also be used with synthetic lubricants?**
Yes, it can, especially in FKM or HNBR versions, but for unknown synthetic oils, practical testing is strongly recommended. This helps you avoid swelling, shrinkage or hardening of the rubber due to additives in the lubricant.

### [Oil Seal PA31 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-pa31-rotary-shaft-seal/)

**Q: Is the PA31 suitable for applications with overpressure?**
Yes, the oil seal PA31 is specifically designed for pressure-loaded applications and can withstand internal pressures of up to approximately 1 MPa when correctly installed.

**Q: Can the PA31 run dry?**
Thanks to the PTFE sealing lip, the PA31 oil seal can tolerate short periods of dry running, although adequate lubrication remains important for maximum service life.

**Q: Does the PA31 have a garter spring?**
No, the sealing pressure is provided by an elastomer disc that supports the PTFE lip, making a spring unnecessary.

**Q: Is the PA31 resistant to aggressive chemicals?**
Yes, the combination of PTFE and a stainless-steel housing makes this oil seal suitable for many acids, alkalis, solvents, and various types of lubricants.

**Q: Can the PA31 be used in an aluminum housing?**
This is possible, but with light metals and rougher bores it is often recommended to use a sealing aid on the outer diameter.

**Q: Are special sizes or materials available?**
Yes, because the oil seal PA31 is produced independently of molds, special sizes and alternative material combinations are available on request.

### [Oil Seal Q10 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-q10-rotary-shaft-seal/)

**Q: What is a textile reinforced oil seal like the oil seal Q10?**
A Q10 oil seal is a radial shaft seal with a rubber sealing lip and a textile reinforced outer shell. This design offers more stability, wear resistance and dimensional rigidity than a standard seal.

**Q: When do I choose a Q10 oil seal?**
An oil seal Q10 type is suitable when a conventional seal fails due to dirt, vibration, misalignment or heavy loading. It is specifically engineered for demanding conditions.

**Q: Can a Q10 oil seal handle high pressure?**
No, Q10 seals are not intended for high-pressure applications. They do, however, tolerate slight pressure better than standard rubber OD designs.

**Q: What is the difference between a Q10 and a standard NBR shaft seal?**
The main difference is the OD construction. A standard NBR seal uses a soft rubber OD, while the Q10 features a stiff, textile reinforced OD that offers far better stability in dirty, vibrating or large-diameter environments.

### [Oil Seal Q13 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-q13-rotary-shaft-seal/)

**Q: What is the main difference between a Q13 and a standard oil seal?**
The main difference is the fabric-reinforced construction and heavy-duty design of the oil seal Q13, making it suitable for large shafts and demanding industrial applications.

**Q: Is the Q13 suitable for high-pressure applications?**
The Q13 is primarily intended for unpressurized or lightly pressurized applications and is not designed for high system pressure.

**Q: Can a Q13 oil seal be installed without dismantling the shaft?**
Yes, many Q13 oil seals are supplied in split versions, allowing installation around a fixed shaft.

**Q: Which materials are available for the Q13 oil seal?**
The Q13 is typically available in NBR, FKM and HNBR, depending on temperature, medium and load.

**Q: Is the Q13 suitable for contaminated environments?**
Yes, the robust and wear-resistant design makes the oil seal Q13 highly suitable for applications involving dust, dirt or other contaminants.

**Q: How do I determine the correct size for a Q13 oil seal?**
The correct size is determined based on the shaft diameter, housing dimensions and the applicable ISO and DIN tolerances.

### [Oil Seal W10 - Rotary Shaft Seal](https://www.oil-seal-stocks.com/all-oil-seals/oil-seal-w10-rotary-shaft-seal/)

**Q: What is the difference between an oil seal W10 and a standard oil seal?**
The W10 rotary shaft seal has a metal outer diameter and is pressure-loadable, whereas standard oil seals often have a rubber-coated outer diameter and are not intended for overpressure.

**Q: Is the W10 suitable for high pressure?**
The oil seal W10 is suitable for pressures up to approximately 0.5 MPa and optionally up to 1 MPa, provided all operating parameters are correctly aligned.

**Q: Can I use a W10 for large diameters?**
Yes, the W10 oil seal is particularly suitable for large diameters and can be supplied with outer diameters of more than 1200 mm.

**Q: Which materials are available as standard?**
As standard, the oil seal W10 is supplied with an NBR sealing lip, an unalloyed steel housing, and an unalloyed spring steel spring. Special materials are available on request.

**Q: Is installation critical for the W10?**
Yes, due to the metal-to-metal press fit, correct installation is essential. Always follow the installation instructions and ensure the correct tolerances.

### [V-Rings](https://www.oil-seal-stocks.com/v-rings/)

**Q: Does a V-ring seal oil under pressure?**
No, a V-ring is intended for low-pressure/pressureless conditions and mainly for dirt and splash-water protection. For pressure sealing you use a radial oil seal or another pressure-capable seal type.

**Q: What is the difference between a V-ring and a radial oil seal?**
A V-ring seals axially against a counterface and rotates with the shaft; a radial oil seal seals radially on the shaft and is designed to retain oil reliably (often also under higher load).

**Q: Will a V-ring keep working with misalignment or varying speed?**
Within normal limits, yes: thanks to the flexible lip, the ring remains effective with slight misalignment and varying rotational speeds, which makes it suitable for “real-life” machines that are not perfectly aligned.

**Q: When do I choose VL or VS?**
When space is limited you often choose VL or VS; VL fits well for lighter duty and lower rotational speeds, while VS is usually chosen when you want to stay compact but still want a stable profile.

### [V-rings Type VA](https://www.oil-seal-stocks.com/v-rings/v-rings-type-va/)

**Q: Is a V-ring A10 a pressure seal?**
No. The A10 V-ring is essentially a protective seal (excluder) against external contamination and can support grease retention, but it is not intended to hold system pressure.

**Q: What is the difference between A10 (VA) and S10 (VS)?**
The A10/VA is the standard version with a straight sealing back. The S10/VS has a conically extended retaining section and therefore often sits more securely on the shaft.

**Q: Can I combine a V-ring A10 with an oil seal?**
Yes, this is a very common combination. The V-ring acts as a pre-seal and protects the radial oil seal and the bearing arrangement from dirt and water from the outside.

**Q: Which parts can serve as the counterface?**
This can be, for example, the housing itself, a housing cover, a pressed-in plate, the front of a roller bearing outer ring, or the metal stiffening ring of a radial shaft seal. The key is that the surface is clean, flat and free of burrs.

**Q: Which material choice is the “safest” if I’m not sure?**
If oil or grease is present, NBR is usually the logical starting point. At higher temperature or with more aggressive media, FKM is often better. With water/weather without oil, EPDM can be suitable.

**Q: What should I pay the most attention to during installation?**
Prevent damage when sliding it on (burr-free and preferably with a chamfer), make sure the ring is not twisted or kinked, and check that the lip runs neatly and evenly on the counterface. At higher speeds, an axial stop or additional retention is advisable.

### [V-rings Type VE](https://www.oil-seal-stocks.com/v-rings/v-rings-type-ve/)

**Q: Is a V-ring E10 suitable for pressure sealing?**
No. The E10 is intended as a (pre-)seal against contamination and splash water and to retain grease to a limited extent, but not for pressure.

**Q: What is the difference between E10 (VE) and A10/S10/L10?**
The E10 is the heavy-duty version with a more robust profile and longer lip. A10 is the standard, S10 clamps more firmly onto the shaft, and L10 is more compact for tight installations.

**Q: NBR or FKM: which should I choose?**
NBR is usually the standard for oil/grease and normal temperatures. Choose FKM for higher temperatures, more aggressive media or when ozone/weathering is more important.

**Q: How do I determine the right size?**
Based on the nominal shaft diameter and a suitable shaft tolerance within the ISO system of fits, so the ring clamps sufficiently without installation issues.

**Q: How important is the counterface?**
Very important. The surface must be clean, flat and stiff; a counterface that is too rough or damaged can accelerate wear and leakage.

**Q: Can the E10 replace a radial shaft seal?**
Usually not. The E10 is primarily a protective seal; for reliable oil retention you often combine it with a radial shaft seal.

### [V-rings Type VL](https://www.oil-seal-stocks.com/v-rings/v-rings-type-vl/)

**Q: Is a V-ring L10 intended as a pressure seal?**
No. The L10 is primarily a pre-seal against dirt, dust and water and retains grease only to a limited extent. For pressure sealing you use other sealing principles.

**Q: What is the main difference between L10 and A10?**
The L10 has a more compact profile with less installation length and a uniform profile across diameters. The A10 is the standard profile and is often the first choice when space is not an issue.

**Q: How does the L10 work at high speeds?**
When stationary and at lower speeds, the lip seals with contact pressure against the counterface. As circumferential speed increases, that pressure decreases and at around 15–20 m/s the lip can begin to lift, causing the ring to work more as a gap seal and flinger disc with low friction.

**Q: When do I choose NBR and when FKM?**
You usually choose NBR for standard applications with oils/greases and normal temperatures. You choose FKM for higher temperatures, more chemical exposure, or when ozone/weather resistance is important.

**Q: Can I also use the V-ring in a stationary arrangement?**
That is possible in some designs, but then the lip pressure does not decrease with increasing speed due to centrifugal force. This generally results in higher friction and can reduce service life somewhat compared to the standard co-rotating installation.

### [V-rings Type VS](https://www.oil-seal-stocks.com/v-rings/v-rings-type-vs/)

**Q: Is an S10 V-ring pressure-resistant?**
No. This is essentially a pressure-free axial seal for protection against contamination and splash water, not for holding system pressure.

**Q: What is the difference between VS (A10) and VA (A10)?**
The VS has a slimmer profile and typically more clamping area and grip on the shaft, making it more stable under vibration and at higher speeds.

**Q: Can I use a S10 V-ring to keep oil completely inside?**
Only to a limited extent. A V-ring can retain grease or oil mist to some degree, but it is mainly intended as a pre-seal and not as a primary oil seal.

**Q: Which material should I choose for outdoor use?**
EPDM is often a logical choice because of its ozone and UV resistance, but you should always check whether the medium is compatible because EPDM is often unsuitable for mineral oil and grease. In many grease/oil applications, NBR remains the standard, possibly with additional protection against UV/o...

**Q: Should I lubricate the lip during installation?**
A thin film can help prevent dry running at start-up. Don’t overdo it, because too much grease can attract dirt.

**Q: What happens at very high speed?**
The lip can be partially relieved by centrifugal force and function more like a splash flange or slinger, with less friction and wear, but also with different sealing behavior.

### [Axial Seals](https://www.oil-seal-stocks.com/axial-seals/)

**Q: Are axial seals the same as oil seals?**
No. An oil seal typically seals radially around the shaft to keep oil or grease in. An axial seal seals axially against a face and is mainly used to keep external contamination out.

**Q: Can I seal pressure with AS-10 or AS-11?**
No, this type is intended for applications without relevant pressure (0 MPa). Its function is protection against dirt and moisture.

**Q: When do I choose AS-11 instead of AS-10?**
When you want extra protection via a labyrinth effect, for example with mud, splash water, or abrasive contamination, and you can design the counterface (with groove) accordingly.

**Q: What is the most important material choice: NBR or FKM?**
Choose NBR as the standard for many oil/grease/hydraulic applications and normal temperatures. Choose FKM if you expect higher temperatures, fuels, synthetic oils, or more severe outdoor influences.

**Q: Where does it most often go wrong in practice during selection or installation?**
Usually at the counterface and positioning: if the counterface is not flat or not clean, or if the seal does not run in the correct position relative to the counterface, you are more likely to get wear or insufficient shielding. With axial seal AS-11, the correct groove/counterface design is also de...

### [Axial Seal AS-10](https://www.oil-seal-stocks.com/axial-seals/axial-seal-as-10/)

**Q: What is the difference between an AS-10 and an oil seal?**
An oil seal retains oil or grease, while an AS-10 prevents external contamination from entering.

**Q: Is an AS-10 suitable for pressure sealing?**
No, the VRM 01 is not designed for internal pressure sealing.

**Q: Why is axial preload important?**
Axial preload ensures the sealing lip runs against the counterface with the correct contact force.

**Q: What temperatures can an AS-10 handle?**
Depending on the material: NBR up to approximately +100 °C and FKM up to approximately +180 °C.

**Q: When should FKM be selected instead of NBR?**
For higher temperatures or chemically aggressive environments.

**Q: How is a VRM 01 installed?**
The seal is press-fitted onto the shaft, paying attention to the correct axial position and preload.

### [Axial Seal AS-11](https://www.oil-seal-stocks.com/axial-seals/axial-seal-as-11/)

**Q: Is the AS-11 a standard oil seal?**
Not in the classic sense. The AS-11 is primarily a protective seal against external influences and is often used ahead of a radial shaft seal or a bearing arrangement.

**Q: Can an AS-11 seal pressure?**
No. This type is intended for unpressurised conditions; the datasheet specifies 0 MPa.

**Q: Why does the AS-11 have an axially extended metal casing?**
That casing protects the elastomer, helps the ring stay firmly on the shaft, and enables an additional labyrinth effect in combination with a continuous groove in the counterface.

**Q: Where is the AS-11 most commonly used?**
Often in wheel hubs, agricultural and construction machinery, pumps and drive systems, but also in general machine building such as electric motors and applications where protection against splash water and dirt is important.

**Q: What are the most common installation mistakes?**
Installing it dry, pressing it on crooked, or damaging the lip during fitting. Light lubrication, a proper installation tool and even pressing force usually prevent these issues.

### [End Caps](https://www.oil-seal-stocks.com/end-caps/)

**Q: Are end caps the same as oil seals?**
No: an oil seal seals dynamically on a rotating shaft, while an end cap statically closes an opening where no shaft runs through. The installation (press-fit in a bore) can sometimes resemble that of an oil seal, but the function is different.

**Q: Can end caps seal pressure?**
In practice, end caps are mainly used in non-pressurised or low-pressure applications; many product families communicate limits around approximately 0.5 bar and emphasise that it is a static closure. For (structurally) higher pressure, a different design is usually required, or at least additional r...

**Q: What is the practical rule of thumb for CS-10 vs CS-12?**
CS-10 is the “smooth” press-fit version for a stable standard press fit; CS-12 has a grooved/ribbed outer casing that can make installation easier and is more often chosen for housings with relatively high thermal expansion.

**Q: How do I prevent leakage due to incorrect installation?**
Make sure the bore size and tolerances are correct, choose the right OD/height, and press the end cap in straight using a tool that supports the outer diameter. Guidelines often refer to DIN 3760 and H8 tolerances for the bore; misalignment and “spring-back” during pressing are typical causes of pro...

### [End Cap CS-12](https://www.oil-seal-stocks.com/end-caps/end-cap-cs-12/)

**Q: What is an End Cap CS-12 used for?**
For static sealing of unused bores in industrial housings.

**Q: What is the difference between an end cap and an oil seal?**
An oil seal is intended for dynamic sealing around a rotating shaft, whereas an end cap fully closes a bore without a shaft.

**Q: Can the CS-12 End Cap be used under pressure?**
The CS-12 is suitable for static sealing at low or no pressure and is not designed for high-pressure applications.

**Q: Which tolerances apply during installation?**
Typically, a bore with ISO H8 tolerance is used to ensure a reliable press fit.

**Q: When is FKM the right choice?**
At higher temperatures, with chemically aggressive media, or in applications with increased service life requirements.

**Q: Is reuse of an End Cap CS-12 possible?**
No, due to the press fit and possible deformation during removal, reuse is not recommended.

### [Oil Seals Overzicht](https://www.oil-seal-stocks.com/oil-seals-overzicht/)

**Q: What are oil seals typically used for?**
Oil seals are used to retain oil or grease inside a system and to protect rotating shafts against external contamination. Typical applications include gearboxes, pumps, electric motors and automotive drivetrains, where reliable sealing under continuous rotation is required.

**Q: hat is the difference between an oil seal and a radial shaft seal?**
An oil seal and a radial shaft seal refer to the same type of sealing solution. “Radial shaft seal” is the technical term, while “oil seal” is commonly used in practice. Both describe a seal designed to prevent lubricant leakage along a rotating shaft.

**Q: Are oil seals standardised in size?**
Yes, oil seals are manufactured according to standard shaft and housing dimensions. Sizes are defined by the shaft diameter, housing bore and seal width, allowing oil seals to be selected based on standard measurements. Detailed size charts are provided on the relevant product and category pages.

**Q: How long does an oil seal last?**
The service life of an oil seal depends on operating conditions such as speed, temperature, lubrication and shaft surface quality. When correctly selected and installed, oil seals can provide long-term, reliable sealing performance. Incorrect selection or installation can significantly reduce servic...

**Q: Can oil seals be used for pressure applications?**
Standard oil seals are primarily designed for applications without significant internal pressure. For pressure-loaded conditions, specific oil seal designs are available that are constructed to withstand higher loads. Selecting the right seal depends on the pressure level and overall operating condi...

**Q: Do oil seals require lubrication?**
Oil seals rely on a thin lubricating film on the shaft surface to function correctly. This lubrication reduces friction, minimises wear and helps maintain consistent sealing performance. Operating an oil seal without sufficient lubrication can lead to increased wear and premature failure.

### [VA FKM](https://www.oil-seal-stocks.com/v-rings/va-fkm/)

### [VL FKM](https://www.oil-seal-stocks.com/v-rings/vl-fkm/)

**Q: When do I choose Viton (FKM/FPM)?**
You choose it for higher temperatures, more chemical exposure, fuel contact, or when ozone/weather resistance and ageing stability are important.

### [VS FKM](https://www.oil-seal-stocks.com/v-rings/vs-fkm/)

**Q: Is a VS (S10) V-ring pressure-resistant?**
No. This is essentially a pressure-free axial seal for protection against contamination and splash water, not for holding system pressure.

**Q: What is the difference between VS (S10) and VA?**
The VS has a slimmer profile and typically more clamping area and grip on the shaft, making it more stable under vibration and at higher speeds.

**Q: Can I use a VS V-ring to keep oil completely inside?**
Only to a limited extent. A V-ring can retain grease or oil mist to some degree, but it is mainly intended as a pre-seal and not as a primary oil seal.

### [VE FKM](https://www.oil-seal-stocks.com/v-rings/ve-fkm/)

**Q: NBR or Viton: which should I choose?**
NBR is usually the standard for oil/grease and normal temperatures. Choose Viton (FKM/FPM) for higher temperatures, more aggressive media or when ozone/weathering is more important.


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