ムサシニュース
Drive pinion oil seals are used at the connection of differential gear and propeller shaft and prevent leak of differential oil and also foreign substances from the outside.
As the oil seals are often installed facing the vehicle travelling direction, there is concern about penetration of foreign substances. So oil seal with a special shape (UES-9 type) is used.
Further, since they are used in the location of extremely high temperature. resistant material is applied