Description:Cat wear rings guide hydraulic pistons, or rods, to maintain alignment and to stop metal to metal contact, which reduces wear and keeps an even pressure distribution on the seals.Attributes:• Material: Nylon• 30° angle cut• Fits 80 mm (3.1496 in) diameter bore• Groove Diameter: 74.977 mm (2.9518 in)• Width: 9.375 mm (0.369 in)• Thickness: 2.45 mm (0.096 in)Application:Used as needed to service hydraulic cylinder components to keep your equipment leak free. Consult your owner's manual or contact your local Cat Dealer for more information.