AMS7258B - Rings, Sealing, Butadiene-Acrylonitrile (Nbr) Rubber Fuel Resistant, Low Shrinkage 65-75

Details Document Number: AMS7258B Revision Number: B Title Rings, Sealing, Butadiene-Acrylonitrile (Nbr) Rubber Fuel Resistant, Low Shrinkage 65-75 Scope This specification covers butadiene acrylonitrile (NBR) rubber in the form of molded rings. Primarily for use in aircraft fuel systems operating from -55 degrees to +125 degrees C (-67 degrees +257 degrees F). These rings contain less plasticizer than normally used in aircraft fuel seals; therefore, there is less shrinkage when the rings are dried out.

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