71400231 Arm Bucket Cylinder Seal Kit fits Fiat Hitachi Excavator FH150 FH200
71400231 Seal Kit Product Overview
The 71400231 Hydraulic Seal Kit is a precision-engineered OEM-equivalent solution designed exclusively for Fiat-Hitachi FH150 and FH200 excavator arm and bucket cylinders. This kit restores factory sealing performance, eliminates hydraulic leaks, and extends component lifespan in demanding earthmoving, trenching, and material handling operations.
Technical Specifications
| Compatible Models | Fiat-Hitachi FH150, FH200 |
| Target Components | Arm Cylinder, Bucket Cylinder (Single/Double-Acting) |
| Pressure Range | 0–35 MPa (5,075 PSI) – Matches FH series hydraulic system specs |
| Temperature Tolerance | -30°C to +120°C (-22°F to +248°F) – Validated for extreme conditions |
| Dynamic Seals Material | Hydrogenated Nitrile (HNBR) – ASTM D5963 Grade M abrasion resistance |
| Static Seals Material | Fluorocarbon (FKM) O-Rings – ISO 3601-1 Class A (Shore A 80±5 hardness) |
| Guide Components | Bronze-Filled PTFE – Coefficient of friction: 0.03–0.07 (ISO 1302) |
Seal Kit Components
| 1. HNBR Step Piston Seal | Maintains 35 MPa pressure integrity in arm cylinders. |
| 2. Dual-Lip Rod Seal (HNBR) | Bidirectional sealing for bucket cylinder rods under side loads. |
| 3. Quad-Scrape Wiper | Removes hardened mud/silica dust (IP69K dust/water resistance). |
| 4. PTFE-Bronze Guide Rings | Prevents metal galling in high-stress pivot points. |
| 5. FKM Port Seals | Seals hydraulic fittings against 35 MPa pressure spikes. |
| 6. Anti-Extrusion Rings | Reinforced nylon prevents HNBR seal blowout during shock loads. |
Key Features
✅ Exact OEM Fit: CNC-machined to Fiat-Hitachi factory tolerances (±0.02mm).
✅ Abrasion Resistance: HNBR withstands 12,000+ cycles in abrasive soil (ISO 14396 tested).
✅ Leak-Free Operation: Triple-cavity rod seals exceed ISO 10766-1 standards by 45%.
✅ Cost Efficiency: 60% longer lifespan vs. generic kits (3,800-hour field validation).
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].
