Hebei Hankai hub bearing seal

3. Pressure Maintenance Maintaining hydraulic pressure is essential for the efficient operation of hydraulic machinery. Seals help retain the pressure within the system, allowing for effective transference of power and improving overall efficiency.

1. Prevention of Fluid Leakage One of the primary functions of an oil seal is to prevent hydraulic fluid from leaking out of the system. Any fluid loss can lead to decreased efficiency, increased wear on components, and ultimately, system failure.

1. Rotary Seals Designed to seal rotating shafts, rotary seals are the most commonly used oil seals in hydraulic motors. They are typically made from materials like nitrile rubber or polyurethane, providing excellent resistance to hydraulic fluids.

Wiper oil seals often feature a unique design that includes a lip that contacts the shaft or surface it is sealing against. This lip creates a dynamic seal that adapts to the movement of the shaft, maintaining a tight enclosure even as the equipment operates. The design often includes an additional wiper or dust lip, which helps remove contaminants that come into contact with the seal, further enhancing its protective capabilities.

High Pressure Hydraulic Shaft Seals An Overview