Product Description
GW 516 Complete Seal Kit is a precision hydraulic service kit engineered for manual pallet jack pumps. Contains polyurethane, nitrile rubber, and PTFE seals, compatible with Multiton TM-M-J models and equivalents. Rated for 3000 PSI hydraulic pressure; includes rod seals, piston seals, wipers, buffer seals, and O-rings conforming to OEM dimensions.
Specifications
Hydraulic
| Rod Seal Type | Type UN polyurethane rod seal, 70-85 Shore A hardness |
| O-Ring Material | NBR nitrile rubber, compliant with ASTM D2000 M2BG714A14B14E034E034 |
| Buffer Seal Material | PU (polyurethane) with nylon reinforcement |
| Seal Working Pressure | Rated for 3000 PSI maximum hydraulic system pressure |
Material
| Seal Kit Material Specification | Polyurethane (PU) DIN ISO 3601, nitrile rubber (NBR) ASTM D2000, PTFE ASTM D4894 |
Part Numbers
| OEM Part Number | GW 516 |
| Cross-Reference Part Numbers | Equivalent to Multiton TM M J hand control seal kit 200064-901; interchangeable with generic part number GW 516 |
Performance
| Seal Duty Cycle | Qualified for continuous duty, up to 120 cycles per hour hydraulic actuation |
| Operating Efficiency | Seal set efficiency ≥ 96% fluid retention at maximum rated pressure |
Frequently Asked Questions
Q: Is GW 516 compatible with Multiton TM-M-J pallet jacks?
A: Yes. GW 516 is engineered as a direct replacement for Multiton TM-M-J hand pump seal kits (OEM part 200064-901). It contains matching seal geometries, materials, and specifications. Verify your Multiton serial range or model plate before ordering to confirm compatibility.
Q: What seal types are in the GW 516 complete kit?
A: GW 516 includes five seal categories: Type UN polyurethane rod seals (70-85 Shore A hardness for pump shafts), NBR nitrile O-rings (pressure compliance), piston seals (bore pressure control), wiper seals (dirt exclusion), and buffer seals (pressure relief). All conform to OEM dimensions and pressures.
Q: What is the maximum pressure rating for GW 516?
A: GW 516 is rated for 3000 PSI hydraulic pressure and is suitable for standard manual pallet jack pump systems. Operating above 3000 PSI will damage the nitrile and polyurethane seal materials, leading to internal leakage and pump failure.
Q: How can I tell if GW 516 seals need replacement?
A: Symptoms include weak or erratic pump pressure, difficulty raising the load, visible oil seeping from the pump housing or rod areas, or a spongy pump handle feel. If you observe any of these, disassemble the pump hand control and inspect piston and rod seals for cracks, hardening, or discoloration.
Q: What tools and skills are needed to install GW 516?
A: You will need a pump disassembly kit (snap ring pliers, seal picks, gasket scraper), fresh hydraulic fluid (ISO 46 or jack manufacturer specification), and clean work area. Rod seals must be installed with the correct orientation (lip direction matters). If you have not serviced hydraulic pump assemblies before, consult a technician to avoid seal inversion or bore damage.
Q: How often should GW 516 seals be replaced?
A: Under normal use (daily manual pallet jack operation in warehouses), GW 516 seals typically last 2 to 4 years before degradation occurs. Heavy use, high ambient temperatures, or contaminated hydraulic fluid will shorten lifespan to 1 to 2 years. Replace the entire kit if any seal shows wear; do not replace seals individually.
