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:
● Steel backup ring
● Max free state diameter: 38.3 mm (1.507 in)

Application:
Cat back-up rings are used to service fuel injectors on heavy duty equipment. Consult your owners manual or contact your local Cat Dealer for more information.

Mfr Part Number:

169-3104

Material Description:

Steel

Outside Diameter (in):

1.48

Thickness (in):

0.04