261-7175 Hydraulic Cylinder Seal Kit 2617175 for Construction Machinery Parts Repair
Hydraulic Seal Kit 261-7175 Ultra-Durable Seals for Heavy-Duty Excavators, Cranes and Backhoe Loader etc Construction Machinery Repair
Product Overview
The Hydraulic Seal Kit 261-7175 is engineered for critical hydraulic systems in heavy-duty construction machinery, including excavators, mobile cranes, and pile drivers. Designed to endure extreme pressure shocks, prolonged vibration, and abrasive environments, this kit delivers unmatched reliability for equipment operating in mining, infrastructure projects, and demolition sites.
Technical Specifications
| Parameter | Specification |
|---|---|
| Compatible Equipment | Excavators (CAT 336, Hitachi ZX470), Mobile Cranes (Liebherr LTM 1200), Pile Drivers |
| Pressure Range | 0–40 MPa (5,800 PSI) |
| Temperature Tolerance | -25°C to +120°C (-13°F to +248°F) |
| Dynamic Seals Material | Thermoplastic Polyurethane (TPU) + Aramid Fiber Reinforcement |
| Static Seals Material | Fluoroelastomer (FKM) with Anti-Swelling Additives |
| Guide Rings Material | Glass-Fiber-Reinforced PTFE (High Wear Resistance) |
| Certifications | ISO 5597 (Hydraulic Cylinder Seals), DIN 3771 |
| Compatibility | Boom/Cabin Cylinders, Slewing Drives, Hydraulic Hammers |
Kit Components & Functions
| Component | Function |
|---|---|
| 1. High-Impact Piston Seal | Resists extrusion in excavator boom cylinders under 40 MPa dynamic loads. |
| 2. Multi-Lip Rod Seal | Triple sealing layers prevent leaks in crane jib cylinders and vibrating tools. |
| 3. Debris-Blocking Wiper Seal | Steel-reinforced wiper with scraper lip removes hardened mud and metal chips. |
| 4. Reinforced Guide Rings | Glass-fiber PTFE withstands side loads in pile driver impact systems. |
| 5. Vibration-Proof O-Rings | FKM material prevents cracking in high-frequency shock environments. |
| 6. Pressure Relief Backup Ring | Teflon-coated backup rings prevent seal collapse during pressure surges. |
Key Features & Benefits
✅ Extreme Pressure Resistance: Up to 40 MPa rating for excavator hammer attachments and crane winches.
✅ Impact Durability: Aramid-reinforced TPU seals withstand 10,000+ shock cycles without deformation.
✅ Precision Fit: CNC-machined to match OEM specs for CAT 336, Liebherr LTM, and Hitachi ZX470.
✅ Contamination Defense: Multi-stage wiper system reduces abrasive wear by 60% in dusty sites.
