The differential oil seal, that is, the half shaft oil seal, is generally located at the lower part of the chassis of the car. The half shaft oil seal is used to seal and divide the two parts of the drive axle and the wheel reducer.
The axle shaft is used to transmit the output torque of the differential side gear to the drive wheel or the wheel side reducer. The oil leakage of the half shaft oil seal will reduce the amount of lubricating oil in the drive axle, affect the normal lubrication, and aggravate the wear of the parts, resulting in early damage. The oil seal of the axle shaft leaks, and the lubricating oil flows into the wheel reducer, causing the oil level of the wheel reducer to rise, breaking the oil seal and flowing into the brake drum, causing poor braking and endangering safe driving.
Oil seals, also known as oil retaining rings, should be installed in all parts of the automobile where rolling bearings or sliding bearings are installed to prevent the leakage or leakage of lubricating oil or grease, and at the same time prevent the immersion of dust or sludge. Good lubrication conditions for rolling or sliding friction parts for extended service life.