Product Description
Pallet Mule PU B-1-32 Lift Ram U-Cup is an OEM hydraulic seal specifically designed for Pallet Mule (Wesley) manual pallet jack lift ram applications. The U-cup style provides optimal dynamic hydraulic sealing within the lift cylinder, ensuring reliable operation and preventing fluid leakage. This part is cross-referenced as PUB-1-32 and PTB-1-32, and supersedes PT B-1-32. Compatible with Pallet Mule AA5000 and AA5500 series manual pallet jacks.
Compatibility: Fits pallet jacks made by Pallet Mule, model PU B-1-32. Alternate model: PU B132; PU B 1 32. SKU: PU B-1-32
Specifications
Part Information
| Part Number | PU B-1-32 |
| Alternate Part Number Formats | PU B132, PU B 1 32 |
| Cross-Reference Part Numbers | PUB-1-32, PTB-1-32 |
| Supersedes | PT B-1-32 |
Compatibility
| Compatible Brands | Pallet Mule, Wesley |
| Compatible Models | AA5000, AA5500 |
| Equipment Type | Manual Pallet Jack Lift Ram |
Material Specifications
| Seal Type | U-Cup Hydraulic Seal |
| Seal Material | High-grade hydraulic elastomer for dynamic sealing |
Frequently Asked Questions
Q: What is a U-cup seal and why does the PU B-1-32 use this design?
A: The PU B-1-32 is a U-cup style hydraulic seal designed specifically for lift ram applications in Pallet Mule manual pallet jacks. The U-cup profile provides optimal dynamic sealing within the lift cylinder by directing hydraulic pressure to create a self-energizing seal that prevents fluid leakage.
Q: Which Pallet Mule models are compatible with the PU B-1-32?
A: The PU B-1-32 is compatible with Pallet Mule AA5000 and AA5500 series manual pallet jacks. It also fits other Pallet Mule and Wesley models requiring a lift ram seal with the PU B-1-32 specification.
Q: What part numbers should I cross-reference when ordering the PU B-1-32?
A: The PU B-1-32 is equivalent to PUB-1-32 and PTB-1-32. It supersedes and replaces PT B-1-32. If your equipment documentation references any of these numbers, the PU B-1-32 is the correct OEM replacement.
Q: How does a U-cup seal maintain pressure differently than a piston ring?
A: A U-cup seal creates a pressure-assisted seal where hydraulic fluid pressure itself energizes and strengthens the seal contact against cylinder walls. This design is superior in dynamic lift ram applications because it automatically compensates for wear and maintains sealing even as components age.
Q: What should I do if my AA5000 or AA5500 loses lifting pressure?
A: Loss of lifting pressure in Pallet Mule AA5000 or AA5500 series jacks often indicates a worn or damaged PU B-1-32 lift ram U-cup seal. Internal hydraulic fluid leakage around the piston rod is a primary failure symptom. Replacement is recommended to restore full load-carrying capability.