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National Oil Seals, now part of the Timken group, are high-quality shaft seals used wherever rotating shafts and bearings need lubrication without leaking. They keep oil and grease in, block dirt and contaminants out, and are available in a wide range of sizes, materials and lip designs for automotive, manufacturing, power transmission and industrial applications.
Oil-Seal-Stocks supplies a wide range of National-equivalent oil seals straight from stock. Use the model overview below to identify your National type, or browse our full range and let our specialists help you find the right match.
Browse all National-equivalent oil seals →
National offers oil seals with a single lip and with a double lip, in rubber, polymer and metal-cased designs. Inside the seal sits a spring that keeps the sealing lip tight against the shaft; without it the seal can start to leak.
The model 35 is a strong static sealing ring, suitable for split housings where edge breakage or butt offset can occur. It works well with light-metal housings and high thermal expansion, since those housings expand more than steel. It can be used in pressure applications and seals larger surface roughness; when installed correctly, the housing is not damaged. View our full range of this type →
The model 32 is an oil seal with a dust lip. It has a metal housing with a rubber exterior and a support spring. View our full range of this type →
The model 48 is an oil seal without a dust lip. It has a metal housing that also forms the outside, plus a support spring. View our full range of this type →
The model 47 has a metal exterior and a rubber interior, with a spring on the inside that provides extra strength and support. It also has a dust lip that keeps dirt out. View our range of crossing types →
The model 45 is an oil seal without a dust lip. It has a double metal housing that also forms the outside, plus a support spring. View our full range of this type →
The model 41 has metal on the inside and outside, with rubber on the inner ring. A spring inside provides extra strength and support, and a dust lip keeps dirt out. View our range of crossing types →
View all National-equivalent oil seals in stock →
Curious about other brands? View the full cross reference overview →
Not sure which type you need? Our specialists are happy to help – contact us and we will find the right seal for you.
