Heavy-Duty Seal for Hydraulic Rock Drills This seal is engineered to provide reliable leak prevention in high-pressure hydraulic systems of rock drills, withstanding extreme pressure surges, temperature fluctuations, and exposure to mining fluids. Its robust design ensures long-term performance in harsh drilling environments, reducing downtime from fluid leaks and protecting critical components like cylinders and valves.
Technical Specifications & Design
Material & Chemical Resistance:
Constructed from FKM (fluorocarbon rubber) compound, offering exceptional resistance to mineral oils, hydraulic fluids (ISO 6743-4), and diesel. This material retains 95% of its elasticity after 1000 hours of immersion in aggressive fluids, outperforming standard NBR seals .
The -20°C to +200°C operating range ensures stability in both cold underground mines and high-friction hydraulic circuits, maintaining seal integrity across temperature extremes .
Pressure & Durability:
Rated for 30MPa maximum working pressure, it handles peak hydraulic loads generated during rock drilling operations. The dual-lip design enhances sealing efficiency, while the 75 Shore A hardness balances flexibility and resistance to extrusion under high pressure .
Precision manufacturing (±0.05mm tolerance) ensures a tight fit with ISO 3601-1 seal grooves, minimizing wear and extending service life to 8000 hours under rated conditions .
Performance Under Stress:
Low compression set (≤15% per ASTM D395) maintains sealing force over repeated cycles, critical for preventing fluid loss in dynamic hydraulic systems. The Ra 0.4μm surface finish reduces friction, further enhancing durability in high-vibration environments .
Applications
Hydraulic Rock Drills: Seals hydraulic cylinders, valve bodies, and pump connections in drilling mechanisms.
Mining Equipment: Compatible with tunnel boring machines, quarry drills, and mineral exploration rigs.
Industrial Hydraulics: Suitable for heavy-duty presses, injection molding machines, and steel mill hydraulic systems.
