Hydraulic Cylinder Piston PU Cup Seal

The main function of the PU cylinder seal of the hydraulic cylinder piston is to seal the gap between the piston and the cylinder to prevent leakage of hydraulic oil. The piston seal is the main seal in the hydraulic cylinder. It is one of the most important seals for the hydraulic cylinder to withstand the pressure. The main requirements for the piston seal are good sealing effect, good pressure retention effect in static state, strong pressure bearing capacity during exercise, anti-extrusion, small friction coefficient and long service life....