WG9003070055 input shaft oil seal adopts a composite material of NBR oil-resistant nitrile rubber and metal skeleton, with dimensions of 55×75×12mm, specially designed for the input shaft sealing of heavy-duty truck transmissions.

The sealing lip is precisely vulcanized with excellent wear resistance, heat resistance and aging resistance. It generates little friction and low temperature rise during high-speed rotation. The built-in self-tightening spring structure automatically compensates for wear, maintaining long-lasting sealing performance without oil leakage.

Manufactured to OE standard dimensions, it features great interchangeability and simple installation. It effectively blocks dust and impurities, protects bearings and shafts, and reduces transmission failures.

WG9003070055 is a dedicated skeleton oil seal for the input shaft of heavy-duty truck HW series transmissions. It is installed inside the input shaft end cover, with its core function to seal lubricating oil against leakage and block external dust, muddy water and other impurities from entering the transmission interior.

The material features excellent resistance to oil, aging, high and low temperatures, suitable for operating environments ranging from -40℃ to 120℃.

It is compatible with heavy-duty truck models including Howo, Sitrak and Steyr, fully interchangeable with original parts for direct replacement. It is a critical sealing component for transmission repair and maintenance.