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SAE AMS 7271K-2019
Rubber: Acrylonitrile-Butadiene Rubber (NBR), Fuel and Low Temperature Resistant, 60 - 70 Type “A” Hardness, For Seals in Fuel Systems
This specification covers an acrylonitrile-butadiene rubber in the form of molded rings, compression seals, O-ring cord, and molded-in-place gaskets for aeronautical and aerospace applications.
Society of Automotive Engineers [sae]