These O-rings are harder and stronger than standard polyurethane O-rings to handle high-pressure applications.

Also known as loaded-lip seals and PolyPaks, an O-ring secures these U-cups to the rod or piston for better sealing performance at lower pressures than unsupported U-cup seals.

These seals have a beveled lip that optimizes contact against the rod, while a secondary lip keeps the seal stable.

Replace the standard O-ring/backup ring combination with a more reliable alternative—these head seals resist twisting and remain stable even in applications with fluctuating pressure.

A two-lip design means that these wipers also function as a rod seal.

Replace wipers in open-groove cylinders—these wipers have an integral steel case so they press fit into the groove around the rod.