Piston Cups

Piston Cups are designed for use on piston heads, plungers or rams in hydraulic or pneumatic service, providing mechanical sealing surface on the edge. The picture shows a hole in the center. Many piston cups come with no center hole. The hole size may vary with each application, so the customer can drill the appropriate size hole, rather than try to make a wrong size hole work on their application. For any questions, or if you can't find what you're looking for, please contact us at 1 (800) 445-7803 or at sales@rocketseals.com