Product Description
Blue Giant hydraulic seal kit (40877) for manual pallet jack models ROI-5, ROI-55, and MTS 2000. Includes NBR O-rings and polyacetal wear rings. OEM equivalent to BG 810-456. Designed for 1.25 inch bore, 0.625 inch piston rod, maximum hydraulic pressure 2600 PSI; compatible with ISO VG 46 hydraulic fluid; temperature range -22°F to +212°F.
Specifications
Hydraulic
| Fluid Compatibility | Compatible with ISO VG 46 hydraulic oil |
Material
| Wear Ring Material | Polyacetal resin (POM), ASTM D4181 |
Part Numbers & Compatibility
| Manufacturer Part Number | 40877 |
| OEM Part Number | BG 810-456 |
| Supersedes | 810-456 |
Frequently Asked Questions
Q: Which pallet jack models does the 40877 seal kit fit?
A: The 40877 is designed for Blue Giant manual pallet jack models ROI-5, ROI-55, and MTS 2000. It is OEM equivalent to BG 810-456 and supersedes part 810-456. Confirm your equipment model and cylinder bore size (1.25 inch) match before ordering.
Q: What is the maximum hydraulic pressure rating for the 40877 seal kit?
A: The 40877 is rated for maximum hydraulic pressure of 2600 PSI. This kit includes NBR O-rings and polyacetal wear rings. Exposure to pressures exceeding 2600 PSI will cause seal failure and loss of load control.
Q: What hydraulic fluid does the 40877 seal kit require?
A: The 40877 is compatible with ISO VG 46 hydraulic oil only. Using non-compatible fluids will degrade the NBR O-rings and polyacetal wear rings. Operating temperature range is -22°F to +212°F.
Q: What materials are used in the 40877 seal kit?
A: The 40877 includes NBR O-rings for dynamic sealing and polyacetal resin (POM) wear rings per ASTM D4181 for low-friction piston guidance. These materials provide reliability in standard warehouse temperature and pressure ranges.
Q: When should the 40877 seal kit be replaced?
A: Replace the 40877 when you observe hydraulic fluid leakage around the cylinder rod, sluggish pump operation, or inability to maintain load. Worn seals allow internal hydraulic bypass and loss of lifting capacity. Keep spare seals on hand for critical equipment.