This oil seal is installed at the front axle housing to retain lubricant and exclude contaminants from the bearing cavity. It sits between the rotating shaft and the stationary housing, forming a dynamic seal that prevents oil leakage and keeps dirt from entering the axle assembly. A worn or hardened seal allows lubricant to weep past the lip, which can lead to bearing starvation and eventual axle damage. The seal is manufactured to match the original housing bore and shaft diameter, ensuring the lip contacts the correct wear surface without requiring shimming or adapters. On installation, inspect the shaft for scoring or burrs and lubricate the seal lip before pressing it into place.