● It has a very low permanent compression deformation rate, ensure there is a stable size when the temperature changes are large.

● High -resistant extrusion performance can prevent it from being squeezed in under high pressure ("breathing") gap.

● Highly abrasion resistance can reduce unnecessary sealing surface roughness.

● The special design of the OV section can avoid the use of O-rings common requirements for being inhaled into the oil port.

● Long service life: good abrasion loss performance, coupled with good material characteristics to make it have a longer service life.

The back of the sealing parts must be atmospheric. Roughly sealed surface roughness Peak -Valley Value (RT) must not be greater than 6.3 microns, the bottom of the sinking hole roughness Peak-valley Value (RT) is about 20 to 30 microns.(DIN 3142 B5-P4). If there are a few holes around,
The exhaust channel must be arranged.