oil-sealed jar safety joint
油封式震击器安全接头
pressure balanced drilling bumpersub
压力平衡式钻井震击器
hook wall pumping packer
抽油井悬挂式封隔器
Apply a light film of engine oil on the vibration damper hub contact surface of the seal.
在减震器毂油封接触表面上涂一层引擎机油薄膜。
Front Oil Seal Installer 6635
前油封安装器6635
spindle inner oil seal
(平衡器) 轴内油封
Super-high pressured dynamic sealing design for a kind of stretch and draw back typed oil-well pipeline robot
一种伸缩式油井管道机器人超高压动密封设计
hookwall compression-set packer
井壁式压缩座封封隔器
hydro-set permanent packer
永久式水力坐封封隔器
fishingcoring jar
打捞和取心用震击器
overshot tubing seal divider
打捞筒油管密封分压器
Drag onto the page to add a self-sealing quick release coupling. Right-click to remove valves.
拖到绘图页后，可以添加自封式速释离合器。右击可删除阀。
telescopic shock absorber
伸缩筒式减震器;可伸缩减震器;筒式减震器
Dynamic loading is produced by seismic forces, non-steady wind, blast, reciprocating machinery.
动荷载是由于地震力、不稳定的风、冲击波，往复式机器所产生。
shock absorber filler plug gasket
减震器注油塞垫密片
oil sealed rotary vacuum pump
油密封式旋转真空泵
oiled sealed waterless gasholder
上油密封干式煤气柜
blowout preventer of three stage packer type
三段密封器式防喷器