Function And Purpose Of Oil Seal

Engine: crankshaft - crankshaft front and rear oil seals - valves - valve oil seals (engine repair kit O-ring) (distributor oil seal, water pump oil seal, balance shaft oil seal, oil pump oil seal...); Camshaft - camshaft oil seal; Transmission: Transmission - front and rear oil seals, shift lever oil seals (transmission repair kit O-ring) (transfer case - front and rear oil seals); Rear axle: half axle - rear half axle oil seal differential - (front) rear angle sagittal oil seal rear wheel oil seal front wheel oil seal steering gear oil seal (steering gear repair kit O-ring) direction booster oil seal (front half axle oil seal).
Oil seals are required for all parts inside the operating body that have liquid lubricating oil and are connected to the outside. Some are rubber, some are metal, and most are steel reinforced rubber, such as crankshaft rear oil seal, gearbox front and rear oil seals, left and right half shaft oil seals, main reducer front oil seal, air compressor crankshaft oil seal, etc