The design of oil seals often incorporates a lip that makes contact with the shaft. This lip is engineered to create a tight seal, thus minimizing the chances of leakage. Additionally, some oil seals come equipped with a spring to enhance the sealing force and maintain contact with the shaft, especially in dynamic applications.
Moreover, wiper seals help in the effective expulsion of any debris that might have accumulated on the rod during operation. This is particularly important in environments where dirt and pollutants are prevalent. By clearing away particles before they can enter the cylinder, wiper seals extend the overall lifespan of the hydraulic system, reducing maintenance costs and downtime.