Product Description
The spring and ball seal kit is a direct replacement component for Rol-Lift manual pallet jack lift ram cylinders with a 1-5/8 inch bore. This kit contains a precision-ground carbon steel ball and a Buna-N elastomer seal with steel spring element, engineered to maintain hydraulic pressure and prevent fluid leakage under load cycling.
Compatible with Rol-Lift manual pallet jacks rated 4500, 5000, 5500, and 6500 lbs capacity. The durable NBR elastomer seal resists mineral hydraulic oils and operates reliably in typical warehouse environments. Designed for straightforward replacement when sealing performance degrades.
Specifications
Material Specifications
| Seal Material | Buna-N (NBR) elastomer with steel spring element |
| Ball Material | Precision ground carbon steel |
| Application | 1-5/8 inch diameter lift ram cylinders for manual pallet jacks |
Part Numbers
| Part Number | RL 7-99000 |
| Manufacturer Part Number | RL7-99000 |
| Cross-Reference Part Numbers | 7-99000, Rol-Lift 7-99000, RL799000, 799000 |
| Equivalent Part Numbers | PUC-76, C-76 |
Compatibility
| Compatible Equipment | Rol-Lift manual pallet jacks 4500, 5000, 5500, 6500 lb capacity (1-5/8 inch lift ram) |
Frequently Asked Questions
Q: What equipment does the RL 7-99000 seal kit fit?
A: The RL 7-99000 is an OEM-compatible spring and ball seal kit for Rol-Lift manual pallet jack models 4500, 5000, 5500, and 6500 lb rated capacity with a 1-5/8 inch lift ram cylinder. Verify your lift ram diameter matches 1-5/8 inches before ordering.
Q: What materials are used in the RL 7-99000 seal kit?
A: The RL 7-99000 contains a Buna-N (NBR) elastomer seal with a steel spring element and a precision ground carbon ball. The NBR elastomer provides durability in mineral hydraulic oil applications and moderate temperature ranges.
Q: What are the cross-reference and equivalent part numbers for RL 7-99000?
A: Cross-reference numbers include 7-99000, Rol-Lift 7-99000, RL799000, and 799000. Equivalent parts include PUC-76 and C-76 from other suppliers. Always confirm part compatibility before substitution.
Q: What is the OEM part number for this seal kit?
A: The OEM part number is RL 7-99000. The manufacturer part number is RL7-99000. Both reference the same component.
Q: How long does the RL 7-99000 seal kit typically last in service?
A: Seal kit lifespan depends on operating hours, load cycles, and maintenance practices. Mineral hydraulic oil contamination or inadequate fluid levels accelerate wear. Replace when you observe reduced lift speed, drift, or external leakage around the cylinder rod.