Vertical three-screw pump adopts doubleseal mechanical seal and framework oil seal, no leakage.
立式三螺杆泵采用机械密封加骨架油封双重密封方式，无泄露。
2
There was a new ringed structure on the driven pan to push back the oil and we also used single framework with one O ring instead of double framework to seal the oil.
在提前器从动盘上设计了一个挡油环形结构，并将原来的双骨架密封结构改为单骨架结构加O型圈密封结构。
3
Double lip teflon seal, use in high pressure 30bar, application in hydraulic motor, pump, hydraulic oil presses.