本规范涵盖了航空和航天应用中模制环、压缩密封件、模制O形圈芯线和就地模制垫圈形式的丙烯腈-丁二烯（NBR）橡胶。对于板材、带材、管材、挤压件和模制型材，请参考AMS3215规范，该规范适用于该用途。

This specification covers an acrylonitrile-butadiene (NBR) rubber in the form of molded rings, compression seals, molded O-ring cord, and molded-in-place gaskets for aeronautical and aerospace applications. For sheet, strip, tubing, extrusions, and molded shapes, refer to the AMS3215 specification, which is intended for that use.