Product Description
Valu Jack VJ 55F142 is an OEM hydraulic O-ring designed for use in Valu Jack 5500-2 and 5500-7 manual pallet jack hydraulic units, serving as an internal hydraulic sealing component suitable for industrial lifting applications.
Compatibility: Fits pallet jacks made by Valu-Jack, model 5500-2 Hydraulic Unit. Alternate model: 55002 Hydraulic Unit; 5500 2 Hydraulic Unit. SKU: VJ 55F142
Specifications
Hydraulic/Pneumatic
| Seal Type | Dynamic O-ring (fluid seal, pressure retention) |
Part Numbers
| Manufacturer Part Number | VJ 55F142 |
| OEM Part Number | VJ 55F142 |
| Compatibility | Valu Jack 5500-2, 5500-7 hydraulic units |
Frequently Asked Questions
Q: What type of seal is the VJ 55F142?
A: The VJ 55F142 is a dynamic O-ring seal designed for hydraulic fluid containment and pressure retention. It functions as an internal hydraulic sealing component within the cylinder assembly.
Q: Which Valu-Jack manual pallet jack models use the VJ 55F142?
A: The VJ 55F142 is compatible with Valu-Jack 5500-2 and 5500-7 manual pallet jack hydraulic units. Both models share the same cylinder pressure boundary design.
Q: What is the material composition of this O-ring?
A: The VJ 55F142 is manufactured to OEM specifications for Valu-Jack hydraulic service. The elastomer compound is compatible with ISO VG 46 hydraulic fluid and typical industrial mineral oils used in manual pallet jack systems.
Q: How does the VJ 55F142 work with the cylinder cap?
A: The VJ 55F142 O-ring seals against the VJ 55F143 cylinder cap and the hydraulic cylinder body, preventing hydraulic fluid from escaping at the cylinder head while maintaining pressure during lift cycles.
Q: What is the typical service life of this O-ring?
A: O-ring service life depends on cycle frequency, fluid contamination, and storage conditions. In active industrial duty, replacement is typically needed when the hydraulic unit fails to maintain pressure or exhibits internal seepage.