High-Pressure & Heat-Resistant Seal Washer for Hydraulic Rock Drills This seal washer is engineered to prevent fluid leakage in high-pressure, high-temperature hydraulic rock drill systems, ensuring reliable pressure retention in demanding mining environments. Constructed from FKM rubber bonded to a 316 stainless steel core, it combines chemical resistance with structural stability, making it ideal for critical components like high-pressure valves and pump connections.
Key Performance Attributes
Material & Durability:
FKM rubber (fluorocarbon elastomer) offers superior resistance to high temperatures (+180°C max) and degradation from synthetic hydraulic fluids, outperforming nitrile-based washers in long-term heat exposure . The 316 stainless steel core provides exceptional corrosion resistance (even in salt-laden mine environments) and prevents deformation under 38MPa pressure, maintaining consistent sealing contact.
The bonded construction eliminates delamination, with a chamfered edge design that distributes pressure evenly across mating surfaces—reducing localized wear by 28% compared to conventional flat-edge washers .
Sealing & Precision:
The washer achieves bubble-tight sealing (ISO 5208 Class A) across its operating range, validated through 16,000-cycle pressure testing with zero measurable leakage. IT12 tolerance and 0.04mm flatness ensure uniform contact with high-pressure flanges, minimizing the risk of pressure loss in critical hydraulic circuits .
Operational Compatibility:
Designed to fit standard high-pressure hydraulic rock drill components (ISO 6162), it integrates seamlessly with existing systems. The drop-in installation design simplifies maintenance, reducing downtime during replacement .
Compatible with water-glycol fluids, it meets fire resistance requirements for underground mining equipment, adhering to industry safety standards.
Applications
Hydraulic Rock Drills: Seals high-pressure valve flanges, pump outlets, and fluid line connections in hot zones near motors or compressors.
Mining Equipment: Suitable for tunneling machines, quarry drills, and exploration rigs requiring high-pressure, heat-resistant hydraulic seals.
