277-8231: 12.7mm Outer Diameter Rectangular Seal

Description: Seals maintain lubrication and keep dirt and other contaminants from entering into the pin and bushing cavity. Attributes: Sealed track has contact between the internal pin and bushing causing wear to begin immediately because of the friction between the two parts. This results in a significant increase of internal wear life of the link assembly. Grease Lubricated Track link assemblies are direct replacements for sealed link assemblies on Cat Hydraulic Excavator models. Outside Diameter: 12.7 mm (0.5 in) Inside Diameter: 6.1 mm (0.24 in) Thickness: 1.3 mm (0.051 in) Application: Consult your owner's manual or contact your local Cat Dealer for more information.