This O-Ring has a diameter of 28 mm mm and is SS-304 in color. The hardness of this Domsel Oil Seal A-SF - 20 x 28 x 3 - NBR - Nitrile - SS-304 - Black - OSS40230 is 20 mm. Alternative names for the compound are , and it is commonly produced by . The O-Ring is typically used in and has an operating temperature range from to . O-Rings 6568856 are referred to as 40230 and have a DIN 3771 size of 28 mm. This item is equivalent to 20 x 28 x 7 and has an approval. The chemical name of this O-Ring is .