Crankshaft seals retain engine oil and prevent external contamination from entering the engine oil system.

Seals designed for dry applications (air-to-fluid interface) typically include a primary lip that prevents engine oil from leaking, and a dust lip. In wet applications (fluid-to-fluid interface), the dust lip is replaced by an auxiliary lip capable of pumping external fluid away from the engine. Some seals have a plastic sleeve to aid in the installation process.

Attributes:
• Air-to-fluid interface
• Cat crankshaft seals are precisely designed to perform in this very demanding application. They must be able to withstand high rotational speeds, elevated temperatures, and high frequency axial motion.
• Cat sealing system uses a robust design, testing, and validation process. Buy the latest Genuine Cat seal to protect your investment.hafts on Cat engines. Consult your owner’s manual or contact your local Cat Dealer for more information.