Product Description
Pallet Mule PU AA-43 U-Cup. OEM seal designed for hydraulic units on manual pallet jacks—specifically AA5000 and AA5500 models. Polyurethane construction with 90 Shore A hardness for high-pressure hydraulic service. Suitable for fitment in standard ram bore and rod dimensions as per Pallet Mule technical documentation. Industry-standard profile for dynamic applications.
Compatibility: Fits pallet jacks made by Pallet Mule, model AA5000. SKU: PU AA-43
Specifications
Material
| Durometer Hardness | 90 Shore A nominal |
Part Numbers
| Manufacturer SKU | PU AA-43 |
| OEM Part Number | AA-43 |
| Alternate Catalog Reference | PUAA-43 |
| Compatible Models | AA5000, AA5500 hydraulic unit |
Frequently Asked Questions
Q: What is a U-Cup seal and why is the PU AA-43 designed as one?
A: A U-Cup seal is a dynamic sealing element with a U-shaped profile that seals and prevents leakage in reciprocating rod and piston applications. The PU AA-43 is engineered as a U-Cup to provide bi-directional sealing in the ram bore and rod area of Pallet Mule AA5000 and AA5500 hydraulic units during compression and extension cycles.
Q: What material is the PU AA-43 made from and what does 90 Shore A hardness mean?
A: The PU AA-43 is manufactured from polyurethane with a durometer hardness rating of 90 Shore A nominal. This hardness rating indicates moderate firmness, balancing the need for high-pressure sealing while maintaining flexibility for dynamic rod movement. This specification is standard for manual pallet jack hydraulic service.
Q: Is the PU AA-43 suitable for high-pressure hydraulic applications?
A: Yes. The PU AA-43 is specifically designed for high-pressure hydraulic service in manual pallet jack hydraulic units. Its polyurethane construction and 90 Shore A hardness provide reliable performance under the pressure demands of standard pallet jack lifting operations.
Q: Does the PU AA-43 fit standard ram bore and rod dimensions?
A: Yes. The PU AA-43 is designed to fit standard ram bore and rod dimensions as specified in Pallet Mule technical documentation for AA5000 and AA5500 hydraulic units. Verify your hydraulic unit specifications match before ordering to ensure proper fitment.
Q: What makes the PU AA-43 suitable for dynamic applications?
A: The PU AA-43 uses an industry-standard U-Cup profile that accommodates the continuous reciprocating motion of the ram rod and piston during lifting and lowering cycles. Polyurethane material resists abrasion from repeated rod movement and maintains sealing contact under variable pressure conditions.
Q: How long does a PU AA-43 U-Cup typically remain effective?
A: A PU AA-43 typically provides 2 to 4 years of service in regular warehouse operations. Service life depends on cycle frequency, operating temperature, hydraulic fluid condition, and maintenance practices. Leaking oil or reduced lifting performance indicates the seal needs replacement.