... gear box,transmission,engine Subordinate departments;Commercial vehicle oil divisionThe series;Engine oil sealProduct overview;Mounted on the catheter valve ... space, control flow into the guide rod and the clearance of lubricating oil. 1. Available material: NBR, HNBR, EPDM, ACM, ... MVQ, Viton (FKM), PTFE, etc.Wide range of material is available. 2. ...