本规范涵盖了丁腈橡胶（NBR），其形式为模制压缩密封件，如航空和航天应用的O形圈、T形密封件和就地模制垫圈。对于板材、带材、管材、挤压件和模制形状，使用AMS3786规范，该规范适用于该用途。

This specification covers a nitrile rubber (NBR) in the form of molded compression seals such as O-rings, T-seals, and molded-in-place gaskets for aeronautical and aerospace applications. For sheet, strip, tubing, extrusions, and molded shapes, use the AMS3786 specification, which is intended for that use.