Cylinder Seals

This design ensures uniform contact of the oil-sealing lip, helping deliver top performance and wear life. Cat U-cup seals work together with the buffer seals to optimize sealing performance while minimizing pressure buildup.

These Cat seals exert pressure on the rod, only when necessary. And because vents provide a passage for high pressure to be relieved back into the cylinder, Cat buffer seals minimize pressure buildup, reducing U-cup failure.

Cat wiper, U-cup and buffer seals feature design improvements that enhance performance, reduce leakage and increase seal life.