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Hitachi 4306444 Boom Cylinder Seal Kit
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| Material | HNBR, PTFE, NBR |
|---|---|
| Applications | Boom Cylinder |
| Rated Pressure | 25-30 MPa |
| Kit Type | Seal Repair Kit |
| Included Components | Seals, O-rings, Wear Rings, Dust Seals |
| Net Weight | 0.8 kg |
| Package Dimensions | 25 × 15 × 10 cm |
OEM Part No.
- 4306444
- 4318962
- 4246123
- 4217002
Engine Part No.
- Isuzu 4BD1
Interchange No.
- 4306444
- 4318962
Fitment Vehicles
- Hitachi EX60-2
- Hitachi EX60-3
- Hitachi EX60WD-2
- Hitachi EX60-1
- Hitachi EX60UR
This boom cylinder seal kit is engineered for the hydraulic boom cylinders of Hitachi EX60 series excavators. The kit includes all necessary seals to rebuild one boom cylinder, utilizing HNBR, PTFE, and NBR materials for compatibility with mineral-based hydraulic fluids and resistance to extrusion under high pressure.
Designed to meet OEM dimensional specifications for the Hitachi 4306444 and 4318962 part numbers. The kit restores sealing integrity to prevent internal bypass and external leakage, ensuring consistent lifting and lowering performance. Suitable for hydraulic systems operating at 25 to 30 MPa system pressure.
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