Description:
Cat back-up rings are thin rings that are designed to prevent extrusion of o-rings, lip seals, and reciprocating shaft seals under pressure.

Attributes:
• Helps maintain pressure seal
• Outside diameter: 52.15 mm (2.05 in)
• Back-up ring

Applications:
Used to service vane pumps in hydraulic systems of heavy-duty equipment. Consult your owner's manual or contact your local Cat Dealer for more information.