High-Temperature Seal Washer for Hydraulic Rock Drills This seal washer is engineered to prevent fluid leakage in high-temperature hydraulic rock drill systems, ensuring reliable pressure retention in demanding mining environments. Constructed from FKM rubber bonded to a 304 stainless steel core, it combines chemical resistance with structural stability, making it ideal for applications involving extreme heat and aggressive hydraulic fluids.
Key Performance Attributes
Material & Durability:
FKM rubber (fluorocarbon elastomer) offers superior resistance to high temperatures (+150°C max) and chemical degradation from synthetic hydraulic fluids, outperforming nitrile rubber in long-term heat exposure . The 304 stainless steel core prevents deformation under 35MPa pressure, maintaining consistent sealing contact even in high-vibration drill operations.
The bonded construction eliminates delamination, with a beveled edge design that distributes pressure evenly across mating surfaces—reducing localized wear by 25% compared to conventional washers .
Sealing & Precision:
The washer achieves bubble-tight sealing (ISO 5208 Class A) across its operating range, validated through 15,000-cycle pressure testing with zero measurable leakage. IT13 tolerance and 0.04mm flatness ensure uniform contact with flanges and valve ports, minimizing the risk of pressure loss in critical hydraulic circuits .
Operational Compatibility:
Designed to fit standard hydraulic rock drill components (ANSI/SAE and ISO flanges), 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 flange connections, valve bodies, and cylinder ports in high-temperature zones (e.g., near motors or exhausts).
Mining Equipment: Suitable for tunneling machines, quarry drills, and exploration rigs requiring heat-resistant hydraulic seals.
