UNP piston seals

UNP seals (fig. 1) are single-acting U-cup seals made of thermoplastic polyurethane (TPU). They are suitable for pressures up to 350 bar (5 075 psi) and are available in metric and inch sizes. For additional information, refer to UNP profile data below.

In case of higher pressures, SKF provides full-face anti-extrusion rings on request. For additional information, contact SKF.