BackUps

Backup Rings (Anti-extrusion Rings), commonly made from elastomers or plastics (commonly PTFE, PEEK) are used to help prevent extrusion of the O-ring or seal into the gap available. Each Backup is either solid or cut (scarf, step or butt).

Available in the multitude of materials:

Nitrile, FKM, HNBR

PTFE, Filled PTFE's

PEEK

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U-Cups

U-Cups come in both unloaded and loaded. They're used in many applications, in both Static and Dynamic applications. Designed to coincide with pressure.

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