Product Description
Pallet Mule PU AA-40 O-Ring: OEM hydraulic sealing ring for Pallet Mule AA5000 and AA5500 manual pallet jack hydraulic units, 35mm I.D., precision-molded from abrasion-resistant NBR. Direct fit for hydraulic system applications, included in OEM seal kit PU AA-76-5000.
Compatibility: Fits pallet jacks made by Pallet Mule, model AA5000. SKU: PU AA-40
Specifications
Compatibility
| Equipment Compatibility | Fits Pallet Mule manual pallet jack models AA5000, AA5500 hydraulic unit |
| Seal Kit Reference | Contained in complete seal kit PU AA-76-5000 for Pallet Mule manual hydraulic unit |
Dimensional Specifications
| O-Ring Profile | Circular, 1-section cross section |
Hydraulic
| Application | Hydraulic sealing element for pressure retention in pallet jack hydraulic unit |
Part Numbers
| OEM Part Number | PU AA-40 |
| Manufacturer Part Number | AA-40 |
Frequently Asked Questions
Q: What is the PU AA-40 O-ring and what equipment does it fit?
A: The PU AA-40 is an OEM hydraulic sealing ring for Pallet Mule AA5000 and AA5500 manual pallet jack hydraulic units. It is a circular profile O-ring with 35mm inner diameter, precision-molded from abrasion-resistant NBR elastomer. This part is included in the complete OEM seal kit PU AA-76-5000.
Q: What material is the PU AA-40 made from and why does that matter?
A: The PU AA-40 is manufactured from NBR (nitrile butadiene rubber), an abrasion-resistant elastomer standard for hydraulic sealing applications. NBR provides reliable resistance to hydraulic oils, maintains its elasticity across warehouse temperature ranges, and resists degradation from repeated compression cycles typical in pallet jack operation.
Q: Can the PU AA-40 be ordered as an individual part or only as part of a seal kit?
A: The PU AA-40 can be ordered as an individual replacement part. It is also included in the complete OEM seal kit PU AA-76-5000, which contains multiple sealing elements for full hydraulic unit service.
Q: How do I verify the PU AA-40 is the correct replacement for my pallet jack?
A: The PU AA-40 is designed for Pallet Mule AA5000 and AA5500 manual pallet jack models. Verify your equipment matches these model numbers before ordering. The 35mm inner diameter specification must also match your hydraulic unit bore dimensions to ensure proper fit and sealing.
Q: What is the typical service life of the PU AA-40 O-ring?
A: NBR O-rings typically provide 3 to 5 years of service in standard warehouse environments with regular pallet jack use. Service life depends on operating temperature, hydraulic fluid type, pressure cycles, and maintenance practices. Leaking hydraulic fluid or reduced jack lift performance indicates the seal requires replacement.
Q: Are there cross-reference part numbers for the PU AA-40?
A: The PU AA-40 is the current OEM part number. Alternate references may exist from aftermarket suppliers, but we recommend using the PU AA-40 designation to ensure you receive the exact OEM-specification part for your Pallet Mule hydraulic unit.