本文件规定了乙丙橡胶（EPM/EPDM）对密封件的要求，该密封件在使用磷酸酯流体的液压系统中用作静态密封件，硬度为80 IRHD（国际橡胶硬度），用于航空航天应用的长期应用。 除非图纸、订单或检验计划中另有规定，否则本文件应与参考文件一起使用。 适用温度范围: -连续工作温度:–55°C至107°C；-间歇服务:–55°C至120°C。购买本文件时，包括所有当前可用的修改件。

This document defines the requirements of ethylene-propylene elastomer (EPM/EPDM) for seal elements for use as static seals in hydraulic systems using phosphate ester fluids, hardness 80 IRHD (International Rubber Hardness Degree) for long-term application for aerospace application. Unless otherwise specified in the drawing, order or inspection schedule, this document shall be used in conjunction with the referenced documents. Applicable temperature range: — continuous service: –55 °C to 107 °C;— intermittent service: –55 °C to 120 °C.All current amendments available at time of purchase are included with the purchase of this document.