Description:
A two-piece seal, consisting of a piston ring and an expander, which prevents oil transfer between the rod end of the cylinder and the cap end. The piston seal is usually made of Teflon, with nylon available for pressure greater than 3000 psi (20,670 kPa). The various shaped expanders are nitrile.

Attributes:
• Nylon seal with rubber expander
• Fits in 100 mm (3.94 in) diameter bore

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.