Description:Cat® Retaining Rings are installed into machined grooves in housings/bores (internal) or on shafts (external) and are engineered for strength and longevity in a variety of applications. Cat retaining rings are manufactured to precise specifications and are built for durability, reliability, and productivity.Application:Assembled to a shaft or housing groove to retain a component or assembly. Consult your owner's manual or contact your local Cat Dealer for more information.