Liner Seals are circular seals with variable cross sectional geometry used to prevent leakage and contamination.Cat® Liner Seals are made of elastomeric materials that is matched to the fluid, temperature, and in Cat engines.Dimensions of our Seals and Rings are consistently held to tight tolerances to ensure they fit properly into seal grooves with the necessary seal compression.Cat® sealing system uses a robust design, testing, and validation process. Buy the latest Genuine Cat® seal to protect your investment.Application:Liner seals are used in Cat® engines. Consult your owner's manual or contact your local Cat Dealer for more information.