Road vehicles — Elastomeric O-rings for hydraulic drum brake wheel cylinders using a petroleum base hydraulic brake fluid (service temperature 120 degrees C max.)
道路车辆——使用石油基液压制动液(最高工作温度120℃)的液压鼓式制动器轮缸用弹性O形圈
Specifies the performance test methods and requirements for elastomeric O-rings used in brake wheel cylinders. Applies to solid O-ring seals mounted stationary in the cylinder bore or on the movable piston of drum brakes. These seals shall be suitable for operation in a temperature range of -40 to +120 °C.