Product Description
Clark CL 25K40020 is a nitrile (Buna-N, NBR) O-ring, suitable for electric lift truck hydraulic applications. Manufactured to AS568-018 size standard with a nominal hardness of 70 Shore A, this industry-standard seal exhibits typical resilience and compatibility for high-pressure hydraulics. No cross-reference equivalents documented at this time.
Specifications
Material & Construction
| Material Specification | Nitrile (Buna-N, NBR) |
Part Numbers
| OEM Part Number | CL 25K40020 |
| Manufacturer Part Number | CL 25K40020 |
Frequently Asked Questions
Q: What are the specifications for the CL 25K40020 O-ring?
A: The CL 25K40020 is a nitrile (Buna-N, NBR) O-ring manufactured to AS568-018 size standard. It has a nominal hardness of 70 Shore A and is designed for high-pressure hydraulic applications in electric lift trucks. This seal exhibits typical resilience and is an OEM Clark part with no documented cross-reference equivalents at this time.
Q: What applications is this O-ring suitable for?
A: The CL 25K40020 is engineered specifically for electric lift truck hydraulic systems. It is designed to seal high-pressure hydraulic circuits and maintains performance in typical fleet and warehouse lift truck environments. Verify compatibility with your specific equipment model before ordering.
Q: Why is the 70 Shore A durometer rating important for this seal?
A: The 70 Shore A hardness rating indicates moderate stiffness and is standard for dynamic sealing in hydraulic systems. This durometer provides the balance between resilience and wear resistance needed for high-pressure hydraulic applications, allowing the O-ring to recover and maintain a seal over repeated compression cycles.
Q: What fluids is this nitrile O-ring compatible with?
A: Nitrile (Buna-N) seals are compatible with petroleum-based hydraulic fluids, mineral oils, and synthetic hydraulic fluids commonly used in industrial lift truck hydraulic systems. They are not recommended for silicone-based fluids or aromatic hydrocarbons. Verify fluid compatibility with your equipment documentation.
Q: How long does this O-ring typically last in service?
A: Lifespan depends on operating pressure, fluid temperature, and duty cycle. In typical electric lift truck hydraulic systems, nitrile O-rings operate reliably for 2-5 years. Monitor hydraulic systems for leaks; if leakage occurs, replace the seal immediately to prevent system failure and equipment downtime.
Q: Are there equivalent part numbers for the CL 25K40020?
A: No cross-reference equivalents have been documented for this Clark OEM part. Use the exact part number CL 25K40020 when ordering to ensure correct fitment and performance in your electric lift truck hydraulic system.
