本规范涵盖片状、条状、管状、挤压和模制形状的合成橡胶。本规范不适用于航空和航天应用中的模制环、压缩密封件、O形密封圈和就地模制垫圈，在选择该材料之前，未充分考虑最终用途。

This specification covers a synthetic rubber in the form of sheet, strip, tubing, extrusions, and molded shapes. This specification should not be used for molded rings, compression seals, O-ring cords, and molded in place gaskets for aeronautical and aerospace applications without complete consideration of the end use prior to the selection this material.