规定了用作鼓式制动缸端盖的模制橡胶护套的性能试验。这些防尘套可防止灰尘和湿气进入，这些灰尘和湿气可能会导致腐蚀，从而影响车轮制动操作。适用于普通和钢筋插入类型的靴子。不包括与橡胶化合物的化学成分、拉伸强度或断裂伸长率有关的要求。

Specifies performance tests for moulded rubber boots used as end closures on drum type brake cylinders. These boots prevent the entrance of dirt and moisture which could cause corrosion and otherwise impair wheel brake operation. Applies to boots of both plain and reinforcement insert types. Requirements relating to chemical composition, tensile strength or elongation at break of the rubber compound are not included.