elastic sealing ring meaning in Chinese

弹体封圈
弹性密封环

Plastics piping systems . injection - moulded thermoplastics fittings for elastic sealing ring type joints for pressure piping . test method for resistance to a short - term internal pressure without end thrust
塑料管道系统.压力管道用弹性密封圈型接头的注模热塑配件.耐无端推力短暂内压力性能的试验方法
Plastics piping systems - injection - moulded thermoplastics fittings for elastic sealing ring type joints for pressure piping - test method for resistance to a short - term internal pressure without end thrust
塑料管道系统.压力管道的弹性密封圈式连接件用注模制热塑塑料性配件.耐无部端推力的快速内压的试验方法