Product Description
Hydraulic seal kit for Ecoa Blackjack (SST) manual pallet jack hydraulic units. OEM part number EC SST-PRK. Includes NBR primary piston seal, rod seal, and back-up washers for 1.50 inch bore and 0.750 inch rod, compatible with Ecoa SST series units. Equivalent to ECSST-PRK and SSTPRK.
Compatibility: Fits pallet jacks made by Ecoa, model Blackjack (SST). Alternate model: Blackjack(SST). SKU: EC SST-PRK
Specifications
Material
| Seal Material Specification | NBR, Shore A 70-90 hardness |
| Backup Washer Material | Polyacetal (POM), natural finish |
| O-Ring Material | NBR (Nitrile Butadiene Rubber) |
Frequently Asked Questions
Q: What pallet jack models does the EC SST-PRK seal kit fit?
A: The EC SST-PRK is designed for Ecoa Blackjack (SST) series manual pallet jacks. This kit is an OEM hydraulic seal replacement specifically engineered for SST model hydraulic units.
Q: What seal materials and specifications are included?
A: The EC SST-PRK includes NBR primary piston seals with Shore A 70 to 90 hardness, rod seals, polyacetal (POM) backup washers, and NBR O-rings. All components are specified for 1.50 inch bore and 0.750 inch rod dimensions.
Q: What bore and rod dimensions does this kit support?
A: The EC SST-PRK is configured for hydraulic cylinders with a 1.50 inch bore and 0.750 inch rod diameter. Verify your equipment specifications before ordering.
Q: What are the alternate part number designations?
A: Equivalent designations include ECSST-PRK and SSTPRK. Order using the exact SKU EC SST-PRK to avoid part number confusion and ensure correct fitment.
Q: When should this seal kit be replaced?
A: Replace the EC SST-PRK when hydraulic fluid leaks from the cylinder rod or main body, when lift speed decreases, or during routine maintenance intervals. Degraded seals cannot contain pressure and must be replaced as a complete kit.