U-cups are available in a variety of materials, such as polyurethane, nitrile rubber, and PTFE depending on the application requirements. That also applies to the O-rings used in loaded U-cups.
Dimensions—Inside Diameter, Outside Diameter, and Cross-Section—are always measured at the base of the U-cup.
There are many standard size U-cups available, some with asymmetrical lip configurations that meet specific application requirements. Reach out to Rothkopf today for assistance in selecting the right part for your application.