Nitrile 70 rubber (NBR) is the general term for Acrylonitrile Butadiene Copolymer. Nitrile is the most widely used and economical elastomer. Nitrile combines excellent resistance to petroleum-based oils and fuels, silicone greases, hydraulic fluids, water and alcohols, with a good balance of such desirable working properties as low compression set, high tensile strength, and high abrasion resistance. Use of Carboxylated Nitrile can have superior abrasion resistance, while still having improved oil resistance.


AS568 is the Aerospace Size Standard for O-rings from the Society of Automotive Engineers. SAE Aerospace Standard (AS) specifies the inside diameters, cross-sections, tolerances, and size identification codes (dash numbers) for O-rings used in sealing applications and for straight thread tube fitting boss gaskets.


Material: Nitrile Rubber 70Shore
AS321 - ID 29.52 x 5.33mm
AS322 - ID 31.12 x 5.33mm
AS323 - ID 32.69 x 5.33mm
AS324 - ID 34.29 x 5.33mm
AS325 - ID 37.47 x 5.33mm


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