rod wiper meaning in English

抽油杆的挡油器
活塞杆刮垢器
活塞杆括垢器

Hydraulic fluid power - cylinders - reciprocating - housings for rod wipers - dimensions and tolerances
液压缸活塞杆用防尘圈沟槽型式尺寸和公差
Fluid power systems and components - cylinder - rod wiper - ring housings in reciprocating applications - dimensions and tolerances
流体传动系统和元件.缸筒.往复用活塞杆刮油涨圈.尺寸和公差
Fluid power systems and components - cylinders - housings for rod wiper rings in reciprocating applications - dimensions and tolerances
流体动力系统和元件.气缸.往复运功用的活塞杆刮垢器环的外套.尺寸和公差
Fluid power systems and components ; cylinders ; housings for rod wiper rings in reciprocating applications ; dimensions and tolerances ; identical with iso 6195 : 1986
流体动力系统和组件.液压筒.往复作动用的刮垢环外罩