Product Description
O-Ring PM P3 by Palletmaster is a nitrile rubber hydraulic seal engineered for use in manual pallet jack pump assemblies, suitable for Palletmaster HSW models and rated for 3000 PSI system pressures.
Compatibility: Fits pallet jacks made by Palletmaster, model HSW. SKU: PM P3
Specifications
Dimensional Specifications
| O-Ring Cross-Section | 0.125 inch nominal |
Hydraulic
| Maximum Pressure Rating | Rated for 3000 PSI hydraulic system |
| Fluid Compatibility | Compatible with ISO 32 hydraulic oil |
Material
| Material Specification | Nitrile rubber (NBR) per ASTM D2000 |
| Hardness | 70 Shore A |
Part Numbers
| OEM Part Number | PM P3 |
| Manufacturer Part Number | PM P3 |
Performance Specifications
| Service Life | Rated minimum 50,000 operating cycles at maximum pressure |
Frequently Asked Questions
Q: What is the PM P3 O-ring and what does it seal in a manual pallet jack?
A: The PM P3 is a nitrile rubber hydraulic seal (O-ring) engineered for use in manual pallet jack pump assemblies. It seals internal pump passages and ports to contain hydraulic pressure and prevent fluid leakage in the HSW series.
Q: What material is the PM P3 O-ring made from and what are its specifications?
A: The PM P3 is manufactured from nitrile rubber (NBR) per ASTM D2000 specifications. It has a hardness rating of 70 Shore A, a nominal cross section of 0.125 inch, and is compatible with ISO 32 hydraulic oil used in manual pallet jacks.
Q: What is the maximum pressure rating for the PM P3 O-ring?
A: The PM P3 is rated for 3000 PSI hydraulic system pressure. Verify that your pallet jack pump system operates within this pressure range.
Q: Which Palletmaster manual pallet jack models use the PM P3 O-ring?
A: The PM P3 is compatible with Palletmaster HSW series manual pallet jacks. The O-ring is installed in the pump assembly to maintain hydraulic containment.
Q: What hydraulic fluid should be used with the PM P3 O-ring?
A: The PM P3 nitrile rubber O-ring is compatible with ISO 32 hydraulic oil, the standard fluid used in manual pallet jack pump systems. Use only ISO 32 grade oil to ensure proper seal performance and longevity.
Q: How do I know if the PM P3 O-ring needs replacement?
A: Replace the PM P3 if you observe hydraulic fluid leaking from the pump assembly, slow or sluggish pump operation, or loss of lifting pressure. Nitrile seals can harden over time with extended exposure to heat and pressure, reducing flexibility and sealing effectiveness.