Hydraulic oil is used as a working medium in the hydraulic transmission system. It plays the role of energy transmission, transformation and control, and plays a role in the smoothness, corrosion, rust and cooling of various components in the hydraulic system. The floating oil seal in the hydraulic system plays the role of avoiding fluid leakage from the relationship surface, insisting on pressure, insisting on energy transmission or transformation.

The choice of floating oil seal should be based on the working environment, such as temperature, pressure, medium and movement method, to select the appropriate floating oil seal material, and through the formulation of the material cooperation formula to meet certain needs.