Description:Seal used with purge screws for the hydraulic hammer arrangement.Attributes:• Material: Rubber and Steel• Inside Diameter: 8 mm (0.31 in)• Outside Diameter: 13.9 mm (0.55 in)• Flange Thickness: 1 mm (0.04 in)• Overall Height: 2 mm (0.08 in)Application:Consult your owner’s manual or contact your local Cat Dealer for more information.