The W packing seal is a double lip, symmetric packing seal. It is derived from a U-ring seal, but with a more rigid section.


W-Packing is a heavy duty hydraulic piston seal specially designed to operate at pressures up to 3000PSI. The sealing lip is in high quality Nitrile rubber integrally moulded with a canvas laminated back up ring to prevent the extrusion of seal material through the clearance gap at the high pressure. A Nylon or acetal resin back up ring also
can be used in place of rubberized canvas back up ring. Two seals can be used back to back for double acting pistons.