2. Contamination Control Besides maintaining pressure, seals also protect the internal components from dirt, dust, and other contaminants that can enter the cylinder. A robust sealing system ensures that these foreign particles do not compromise the cylinder's functionality, which can drastically affect the overall performance and lifespan of the hydraulic system.

Rotary lip seals function on the principle of pressure differential. As the shaft rotates, the sealing lip exerts a force against the surface, creating a tight seal that prevents the escape of fluids. This is achieved through the elastic deformation of the lip material, which conforms to the shaft's surface. As a result, the seal maintains contact even as the shaft moves, effectively mitigating the risk of leakage.

Oil seals for rotating shafts are used in a wide range of applications, including automotive engines, industrial machinery, and hydraulic systems. They are essential components in ensuring the smooth and efficient operation of these machines, and without them, leakage and contamination can occur, leading to costly downtime and repairs.