本规范涵盖了片状尼龙布增强丁腈橡胶（NBR）以及部分固化片状模制和固化形状的NBR橡胶。主要用于发电厂燃料供应和控制系统中的隔膜。

This specification covers nylon-cloth-reinforced acrylonitrile - butadiene (NBR) rubber in the form of sheet and of shapes molded and cured form partly cured sheet. Primarily for diaphragms in power plant fuel supply and control systems.