Engine: crankshaft -- crankshaft front and rear oil seal valve -- valve oil seal (engine repair kit O-ring) (distributor oil seal, water pump oil seal, balance shaft oil seal, machine oil pump oil seal...) ; Camshaft -- camshaft oil seal; Transmission: Transmission - Transmission front, back oil seal shift lever oil seal (TRANSMISSION repair kit O-ring) (PTO - PTO front, back oil seal); Rear axle: half shaft -- rear half shaft oil seal differential --(front) rear Angle vector oil seal Rear wheel oil seal front wheel oil seal direction oil seal (direction machine repair kit O-ring) direction booster oil seal (front half shaft oil seal)

All parts of the moving body which have liquid lubricating oil and are connected with the outside need oil seal. Some are rubber, some are metal, most are steel bone rubber, such as crankshaft oil seal, gearbox oil seal, left and right shaft oil seal, main reducer oil seal, air compressor crankshaft oil seal and so on