Seal

Frequently Asked Questions

Q: What does this seal kit include and which pallet jack models is it for?
A: This seal is used in hydraulic cylinders and pump assemblies on manual and electric pallet jacks from Crown, Toyota, Raymond, Yale, Hyster, and similar equipment. Seals prevent hydraulic fluid leakage and maintain system pressure. Verify your equipment model and cylinder type before ordering.

Q: What materials are in this seal and how long does it last?
A: Pallet jack seals are typically made from nitrile rubber (NBR) or polyurethane, designed to withstand hydraulic oil and operating temperatures. Lifespan is 3 to 7 years depending on equipment use intensity, duty cycle, and environmental conditions. Seals degrade faster in extreme temperatures or with contaminated hydraulic fluid.

Q: What are the symptoms of a failing seal?
A: Warning signs include slow or incomplete load lifting, visible hydraulic oil leakage beneath the jack, difficulty maintaining load height, hissing sounds from the hydraulic cylinder, or degraded lifting power. Any of these symptoms indicates seal replacement is needed to prevent system failure.

Q: Does this seal work in cold storage or wet environments?
A: Standard nitrile seals function in cold storage down to approximately -20 degrees Fahrenheit and in wet conditions. Verify the seal material and temperature rating for your specific application. Seals exposed to extreme cold or chemical spills may require special compound variants.