234-2595 Hydraulic Cylinder Seal Kit 2342595 for Caterpillar 428B 438B/C
Hydraulic Seal Kit 234-2595 High-Performance Seals for Caterpillar 428B 438B 438C, Crawler Cranes, Hydraulic Breakers, and Demolition Equipment
Product Overview
The Hydraulic Seal Kit 234-2595 is engineered for extreme-duty applications in crawler cranes, hydraulic breakers, and demolition excavators, where rapid pressure fluctuations and heavy shock loads demand unparalleled sealing reliability. Designed to withstand 50+ MPa dynamic pressure and repetitive impact cycles, this kit ensures leak-free operation in demolition, bridge construction, and heavy lifting operations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Compatible Equipment | Caterpillar 428B 438B 438C, Crawler Cranes (Liebherr HS 8550), Demolition Excavators (CAT 330F HD), Hydraulic Breakers |
| Pressure Range | 0–50 MPa (7,250 PSI) |
| Temperature Tolerance | -25°C to +140°C (-13°F to +284°F) |
| Dynamic Seals Material | Thermoplastic Elastomer (TPE) + Steel Alloy Reinforcement |
| Static Seals Material | Fluorosilicone (FVMQ) for High-Temperature Stability |
| Guide Rings Material | Molybdenum-Disulfide-Coated PTFE (Ultra-Low Friction, Impact Resistant) |
| Certifications | ISO 10766 (Cylinder Seals), EN 16228 (Demolition Equipment Safety) |
| Compatibility | Crane Boom Cylinders, Breaker Hammer Actuators, Demolition Shear Hydraulics |
Kit Components & Functions
| Component | Function |
|---|---|
| 1. Shock-Absorbing Piston Seal | Steel-reinforced TPE resists 50 MPa impact loads in breaker hammer systems. |
| 2. Quadruple-Lip Rod Seal | Four sealing barriers prevent leaks in crane boom cylinders under side loads. |
| 3. Impact-Resistant Wiper Seal | Tungsten-carbide scraper removes concrete debris during demolition operations. |
| 4. Low-Friction Guide Rings | MoS2-PTFE coating reduces breakaway force in sub-zero crane operations. |
| 5. High-Temp O-Rings | FVMQ material maintains flexibility in +140°C hydraulic systems. |
| 6. Pressure-Diffuser Backup Seal | Titanium-alloy rings distribute shock loads to protect primary seals. |
Key Features & Benefits
✅ Demolition-Grade Durability: 4x lifespan vs. standard seals in 50 MPa breaker hammer cycles.
✅ Thermal Stability: Fluorosilicone seals withstand heat from continuous demolition workloads.
✅ Precision Fit: Laser-scanned to match Liebherr HS 8550 and CAT 330F HD OEM specifications.
✅ Contaminant Lockout: Tungsten-carbide wiper traps 95% of concrete/rebars particles.
