Product Description
Hydraulic U-Cup VJ 55F151 for Valu Jack 5500 series manual pallet jack hydraulic units; OEM direct-fit seal, installed within pump assembly for continuous hydraulic operation.
Compatibility: Fits pallet jacks made by Valu-Jack, model 5500-2 Hydraulic Unit. Alternate model: 55002 Hydraulic Unit; 5500 2 Hydraulic Unit. SKU: VJ 55F151
Specifications
Material
| Finish | Molded elastomeric surface; untreated |
Part Numbers
| OEM Part Number | VJ 55F151 |
| Compatible Models | Valu Jack 5500-2 manual pallet jack hydraulic unit |
Frequently Asked Questions
Q: What does the VJ 55F151 U-Cup seal do in the hydraulic pump?
A: The VJ 55F151 is a hydraulic U-Cup seal installed within the pump assembly of Valu-Jack 5500-series manual pallet jack hydraulic units. It maintains pressure integrity and prevents internal hydraulic fluid leakage during pump operation.
Q: Which Valu-Jack models use the VJ 55F151?
A: The VJ 55F151 is compatible with Valu-Jack 5500-2 manual pallet jack hydraulic units. Alternate model designations include 55002 Hydraulic Unit and 5500 2 Hydraulic Unit. Verify your equipment model before ordering.
Q: What material is the VJ 55F151 molded from?
A: The VJ 55F151 features a molded elastomeric surface finish in its untreated state. This elastomer is engineered to maintain flexibility and sealing pressure across the operating temperature range of typical hydraulic pallet jack systems.
Q: Is the VJ 55F151 a direct OEM component?
A: Yes. The VJ 55F151 is an OEM direct-fit seal specified by manufacturer part number VJ 55F151. It is the factory replacement component for Valu-Jack 5500-series pump assemblies.
Q: What symptoms indicate the VJ 55F151 seal has failed?
A: Failed U-Cup seals typically produce loss of hydraulic pressure under load, visible fluid weeping from pump assembly seams, or sluggish lifting response. If observed, drain the pump, replace the seal, and refill with fresh hydraulic fluid to ISO 32/46 specification.
Q: Can the VJ 55F151 be reused after removal?
A: No. U-Cup seals like the VJ 55F151 are single-use components. Once removed, the molded elastomer loses its sealing geometry and cannot maintain pressure integrity. Always use a new seal during pump assembly or rebuild.