This front wheel oil seal is a critical sealing component for SHACMAN heavy truck front wheel hub assembly. It is installed between axle spindle and wheel hub to prevent lubricating grease leakage. It also blocks mud, dust, rainwater and impurities from entering the hub bearing chamber. Made of high-quality rubber composite with built-in steel skeleton for stable structural support. Good high-temperature resistance, aging resistance and elasticity under bumpy heavy-duty operation. Each oil seal undergoes air tightness test and dimensional inspection before factory delivery. It solves common faults such as hub oil leakage, bearing corrosion and premature wear. Essential consumable spare part for heavy truck front axle hub maintenance and overhaul.