This oil seal sits in the engine cover of the host tractor, preventing lubricant leakage past the rotating shaft. It is a radial lip seal that maintains a contact barrier between the stationary housing and the shaft, keeping oil inside the crankcase or gearcase and excluding dirt and moisture. A worn seal allows oil to weep externally, which can lead to low oil levels and contamination of the belt or clutch surfaces. Bepco manufactures this seal to match the original housing bore and shaft diameter, so the lip contacts the shaft at the correct interference without requiring shimming or adapters. On installation, ensure the seal bore is clean and free of burrs, and lubricate the lip before sliding it over the shaft.