self seal coupling 自封联结器

self-seal coupling 自密封联轴器

quick-seal coupling 速密耦合

slide seal coupling 滑接快速接头

quick seal coupling 速封耦合 ; 速密耦合

slide-seal selfsealing coupling 滑接自封接头

coupling quick-seal 快密封耦合

pump coupling with mechanical seal 机械密封泵联轴器

one way seal hose coupling 单向自封软管接头

crescent seal gearpump coupling 内啮合齿轮泵联轴器