Product Description
QUAD RING
Frequently Asked Questions
Q: What is a quad ring and how does it differ from a standard O-ring?
A: A quad ring (also called a four-lobe seal) has four sealing surfaces instead of the two surfaces on a standard O-ring. This design provides better extrusion resistance, lower wear rates, and improved sealing performance in high-pressure and high-speed dynamic applications. Quad rings are often used in more demanding hydraulic circuits.
Q: What applications use the CL 25K40112 quad ring?
A: The CL 25K40112 is engineered for Clark electric lift truck hydraulic systems where enhanced sealing performance and durability are required. Quad rings are typically found in high-pressure cylinders, pump casings, and control valves. Verify compatibility with your specific equipment model.
Q: What material is the CL 25K40112 quad ring made from?
A: Contact our parts team with your lift truck model and serial number to receive complete material specification and durometer rating for the CL 25K40112. This information is essential for understanding fluid compatibility and operating conditions.
Q: Why would I choose a quad ring over a standard O-ring?
A: Quad rings provide superior performance in high-pressure systems due to improved sealing efficiency, reduced friction, and better extrusion resistance. They require less squeeze and can operate reliably at higher pressures with less wear than traditional O-rings, extending service life.
Q: How do I know if this quad ring needs replacement?
A: Replace the seal if you observe external hydraulic leaks near cylinders or valve ports, a drop in system pressure, or sluggish equipment response. Early replacement of a failing seal prevents hydraulic fluid loss and damage to surrounding components.
Q: Are there equivalent part numbers for the CL 25K40112?
A: Use the OEM part number CL 25K40112 for correct fitment. No cross-references have been documented. Contact our parts team if you need specifications or fitment verification for your Clark equipment.
