Product Description
O-ring
Frequently Asked Questions
Q: What is the CL 25KO40020 and what does it seal?
A: The CL 25KO40020 is an OEM Clark O-ring seal designed for electric lift truck hydraulic systems. O-rings prevent internal and external fluid leakage in cylinders, pumps, valves, and manifolds under pressure.
Q: What are the complete specifications for this O-ring?
A: Use the exact part number CL 25KO40020 when ordering to ensure correct size and material specifications. Contact our parts team with your lift truck model and serial number to receive detailed dimensional data, material composition, and durometer rating.
Q: What applications does the CL 25KO40020 fit?
A: This seal is engineered for Clark electric lift truck hydraulic systems. It is used in pressure-sealing applications throughout the hydraulic circuit. Verify fitment with your specific equipment model and serial number before purchasing.
Q: How do I diagnose a failing O-ring in my lift truck?
A: Signs of O-ring failure include visible hydraulic fluid leaks, reduced system pressure, slower lift or lower speeds, and erratic cylinder operation. If any of these symptoms appear, replace the seal promptly to prevent further system damage and restore equipment reliability.
Q: Are there cross-reference or equivalent part numbers?
A: Use the OEM part number CL 25KO40020 for correct fitment. Contact our parts team if you need specifications, compatibility information, or fitment verification for your Clark equipment model.
Q: How often should this O-ring be replaced?
A: O-ring lifespan varies based on operating pressure, fluid temperature, and duty cycle. Replace seals immediately when leakage is detected. In typical warehouse and fleet lift truck operations, plan for seal replacement every 2-5 years depending on usage intensity.
