Out in the shaft loaded oilring groove or by centrifugal force along the axis of the oil drain off the surface, the oil flows back to the assembly after the pool, and thus play a role in sealing.
在轴上开出沟槽或装上油环，借离心力将沿轴表面外流的油甩掉，集结后流回油池，因而起到密封的作用。
2
An often overlooked function of oil is ring and valve sealing.
一个经常被忽视的功能是环和油阀密封。
3
At installation, insufficient compression of the sealing pad behind the carbon ring seal of the expander results in oil entrance to expander body and to the corresponding pipeline.