71400133 Hydraulic Cylinder Seal Kit for Fiat-Hitachi Excavator FH220 FH300
71400133 Hydraulic Cylinder Seal Kit Product Overview
The 71400133 Hydraulic Cylinder Seal Kit is a genuine OEM-equivalent sealing solution engineered exclusively for Fiat-Hitachi FH220-1/FH220-2 • FH300-1/FH300-2 excavator hydraulic cylinders repair. This kit restores factory performance by eliminating leaks, preventing contamination, and ensuring reliable operation in demanding digging, loading, and trenching applications.
71400133 Seal Kit Technical Specifications
| Compatible Models | Fiat-Hitachi FH220, FH300 Series Excavators |
| Target Components | Boom, Arm, and Bucket Hydraulic Cylinders |
| Pressure Range | 0–35 MPa (5,075 PSI) – Matches FH220/FH300 hydraulic system ratings |
| Temperature Tolerance | -30°C to +110°C (-22°F to +230°F) – Validated for extreme worksite conditions |
| Dynamic Seals Material | High-Strength Nitrile Rubber (HNBR) – Resists abrasion from sand/gravel |
| Static Seals Material | Fluorocarbon (FKM) O-Rings – For high-pressure connections and port seals |
| Guide Rings | Bronze-Filled PTFE – Reduces friction, withstands side-loading |
Seal Kit Components
| 1. HNBR Piston Seal (U-Cup) | Maintains pressure integrity in boom/arm cylinders under 35 MPa loads. |
| 2. Double-Lip Rod Seal (HNBR) | Prevents external leaks and grit ingress in FH300 bucket cylinders. |
| 3. Reinforced Wiper (Polyurethane) | Removes hardened mud and debris during rod retraction. |
| 4. Heavy-Duty Guide Rings | PTFE-bronze composite prevents metal-to-metal contact in high-stress pivots. |
| 5. FKM O-Rings | Seals hydraulic ports and end caps against high-pressure blowouts. |
| 6. Anti-Extrusion Backups | PTFE rings protect seals from damage during pressure spikes. |
Key Features & Benefits
✅ Exact OEM Fit: CNC-machined to Fiat-Hitachi FH220/FH300 factory blueprints.
✅ Abrasion Resistance: HNBR seals withstand silica dust in quarry/mining operations.
✅ Leak-Free Guarantee: Multi-layer sealing design exceeds ISO 10766 standards.
✅ Extended Service Life: 2x durability vs. generic kits.
Frequently Asked Questions (FAQ)
Q: Do you have any other excavator model repair seal kits ?
A: Yes. As the professional excavator seal kits manufacturer, we produce all the excavators repair seal kits, standard sizes and also support customization. Please tell us the part number seal kit you want.
Q: I can’t find the model I want. Are all your seal repair kits here?
A: No. We have more than tens of thousands seal kits. Here only a small part of them is shown. We have stock of all the seal kits for construction machinery. Please contact us!
Contact Us
For more information or to request a quote, please contact us or email [email protected].
