12 x 20 x 5.5 U Cup Seal

Harwal 12 x 20 x 5.5mm U43 polyurethane U-cup seal with 12mm ID, 20mm OD, and 5.5mm width. Made from 90 Shore A polyurethane for reciprocating hydraulic and pneumatic cylinders. Flexible U-shaped lips provide dependable pressure sealing and resist wear, extrusion, oils, and common industrial fluids.