WW PM-13P

Frequently Asked Questions

Q: What is the WW PM-13P U-cup seal?
A: The WW PM-13P is a U-cup seal designed for hydraulic cylinders on Dayton model 3KR84 manual pallet jacks. It prevents hydraulic fluid leakage and maintains system pressure during lift and lower cycles.

Q: Which pallet jacks use the WW PM-13P U-cup seal?
A: The WW PM-13P U-cup seal fits Dayton 3KR84 model pallet jacks. Verify your jacks hydraulic cylinder bore diameter and port configuration match before ordering, as incorrect seal size can cause leaks or system malfunction.

Q: What material is the WW PM-13P U-cup made from?
A: The WW PM-13P is typically manufactured from nitrile rubber or urethane compound, selected for compatibility with standard mineral hydraulic oils. These materials provide optimal sealing performance and resistance to fluid degradation over extended use.

Q: How do I know if the WW PM-13P seal needs replacement?
A: Replace the WW PM-13P U-cup if you observe hydraulic fluid pooling under the cylinder, slow or uneven lift speed, or inability to maintain load height. A leaking seal indicates the seal lip has worn or cracked and must be replaced to restore system function.

Q: Does the WW PM-13P cross-reference to other seal part numbers?
A: The WW PM-13P is the original part number for Dayton 3KR84 jacks. If you require an equivalent from aftermarket suppliers, confirm the U-cup bore size, pressure rating, and material compatibility with your hydraulic system before ordering a substitute.