Product Description
Valu-Jack VJ 491 Seal Kit for KD-5500 manual pallet jacks contains piston, rod, and wiper seals for hydraulic pump unit maintenance. Suitable for hydraulic cylinders with 0.75–1.00 inch bore and 0.50–0.63 inch rod diameter, constructed from NBR and urethane compounds, compatible with systems rated up to 3000 PSI.
Compatibility: Fits pallet jacks made by Valu-Jack, model KD-5500. Alternate model: KD5500; KD 5500. SKU: VJ 491
Specifications
Specifications
| Material | NBR and urethane compounds |
| Seal Construction | Compression-molded with precision ground edges for dynamic hydraulic sealing |
| Bore Size | 0.75–1.00 inch |
| Rod Diameter | 0.50–0.63 inch |
| Pressure Rating | Up to 3000 PSI |
| Seal Components | Piston seal, rod seal, wiper seal |
Part Numbers
| Part Number | VJ 491 |
| Manufacturer | Valu-Jack |
| Compatible Models | KD-5500, KD5500, KD 5500, KD-6600 |
Frequently Asked Questions
Q: What equipment does the VJ 491 seal kit fit?
A: The VJ 491 seal kit is designed for Valu-Jack KD-5500 manual pallet jacks. It fits hydraulic cylinders with 0.75 to 1.00 inch bore and 0.50 to 0.63 inch rod diameter. Verify your jack model matches KD-5500, KD5500, or KD 5500 before ordering.
Q: What seals are included in the VJ 491 kit?
A: The VJ 491 contains piston, rod, and wiper seals for hydraulic pump unit maintenance. All seals are constructed from NBR and urethane compounds and are compression-molded with precision ground edges for dynamic hydraulic sealing.
Q: What pressure rating does the VJ 491 support?
A: The VJ 491 seal kit is compatible with hydraulic systems rated up to 3000 PSI. Do not use in systems exceeding this pressure rating.
Q: What materials are used in the VJ 491 seals?
A: The VJ 491 seals are manufactured from NBR (nitrile rubber) and urethane compounds. These materials provide resistance to hydraulic fluids and durability in high-pressure applications up to 3000 PSI.
Q: When should the VJ 491 seal kit be replaced?
A: Replace the VJ 491 seal kit when you observe hydraulic fluid leaks from the pump unit, loss of lift pressure, or sluggish pump operation. Routine seal replacement during major pump rebuilds extends equipment life and prevents secondary damage to cylinders.