本标准规定了氟橡胶FKM中O型圈的特性，低压缩永久变形，硬度80 IRHD，适用于航空航天应用。它们用于空气，矿物/合成油和燃料系统。工作条件 - 温度:a）连续操作:-20°C至225°C; b）静态应用最低使用温度:-50°C。限制:不能与磷酸酯型液压油（永久或暂时浸入）一起使用

This standard specifies the characteristics of O-rings in fluorocarbon rubber FKM, low compression set, hardness 80 IRHD, for aerospace applications. They are intended to be used in air, mineral/synthetic oil and fuel systems. Operating conditions - Temperature: a) Continuous operation: -20°C to +225°C; b) Static applications minimum temperature of use: -50°C. Limitation: not to be used with phosphoric ester type hydraulic fluids (permanent or temporary immersion).