Hebei Hankai excavator cylinder seal kits

A rotary shaft seal, also known as a lip seal or radial seal, is a device that creates a barrier between two environments the area where the rotating shaft operates and the external atmosphere. In high-pressure applications, these seals are engineered to withstand significant operational pressures, often exceeding several thousand psi. They are utilized in applications such as hydraulic pumps, turbines, and engines, where preventing fluid loss is critical.

Axle hub seals, often referred to as axle seals or differential seals, are located at the junction of the axle housing and the axle shaft. Their primary purpose is to keep the lubricating oil inside the axle housing while preventing dirt, moisture, and other debris from entering. Made from durable materials like rubber or polymer, these seals are engineered to withstand high temperatures, pressure, and the harsh conditions typically encountered in automotive environments.