Product Description
AC331, O-, Ring
Compatibility: Fits pallet jacks made by Noblelift, model AC55. SKU: AC331
Frequently Asked Questions
Q: What equipment does the AC331 O-ring fit?
A: The AC331 O-ring is designed for Noblelift model AC55 pallet jacks. It seals hydraulic connections and prevents fluid leakage in the lift cylinder and pump assemblies. Confirm your equipment model before ordering.
Q: What material is the AC331 O-ring made from?
A: The AC331 is manufactured from nitrile rubber (NBR), which provides excellent compatibility with standard hydraulic fluids, water resistance, and temperature stability. Nitrile is the industry standard for material handling seal applications.
Q: What are the symptoms of a failed AC331 O-ring?
A: Signs of O-ring failure include visible hydraulic fluid leaks at connection points, loss of hydraulic pressure, inability to maintain load, and sluggish or unresponsive lifting. Inspect O-rings during pressure and leak checks.
Q: How long does the AC331 O-ring typically last?
A: Under normal warehouse conditions, the AC331 typically lasts 2 to 4 years. Lifespan is affected by hydraulic fluid condition, operating temperature, pressure cycling frequency, and storage environment. Replace preventively during major overhauls.
Q: What happens if the AC331 O-ring is not replaced when damaged?
A: A failed O-ring causes progressive hydraulic fluid loss, reduced lift capacity, and eventual complete loss of function. Continuing to operate with a leaking seal risks damage to downstream hydraulic components and introduces contamination into the system.
Q: Can the AC331 O-ring be used on other pallet jack brands?
A: The AC331 is engineered for Noblelift AC55 models. O-ring sizes and hardness ratings vary across manufacturers and pressure ratings. Contact our team if you need cross-reference information for other equipment brands.
