oil-sealed bumper sub

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