Heavy-Duty O-ring for Hydraulic Rock Drills This O-ring is engineered to deliver reliable sealing in high-pressure, high-temperature hydraulic rock drill systems, preventing fluid leakage in demanding mining environments where extreme pressures and temperature fluctuations are common. Constructed from FKM rubber, it offers exceptional resistance to hydraulic fluids, thermal degradation, and mechanical wear, ensuring long-term performance in critical components such as high-pressure valves, cylinder heads, and fluid line connections.
Key Performance Attributes
Material & Durability:
FKM rubber (fluorocarbon elastomer) provides superior resistance to synthetic hydraulic fluids, mineral oils, and water-glycol mixtures, maintaining elasticity even after prolonged exposure to temperatures up to 200°C. Its 75 Shore A hardness balances flexibility for tight sealing with resistance to extrusion under 35MPa pressure, a critical feature in withstanding pressure surges in rock drill operations .
The molded, splice-free design eliminates weak points, reducing the risk of tearing or failure. This construction supports a service life of 100,000+ cycles, outperforming standard elastomers in durability tests under high-vibration conditions .
Sealing & Precision:
Compliant with ISO 3601-1 size tolerances, the O-ring ensures consistent fit in standard grooves, creating a bubble-tight seal (ISO 5208 Class A) across its operating range. This precision minimizes pressure loss in hydraulic circuits, enhancing overall drill efficiency and reducing maintenance downtime .
Operational Compatibility:
The -25°C to +200°C temperature range makes it suitable for both cold underground mines and high-heat zones near drill motors. It integrates seamlessly with existing hydraulic rock drill assemblies, simplifying replacement during maintenance .
RoHS compliance ensures alignment with global environmental standards for mining equipment components, meeting regulatory requirements in key markets.
Applications
Hydraulic Rock Drills: Seals high-pressure valve chambers, cylinder heads, and critical fluid line connections.
Mining Equipment: Compatible with tunneling machines, quarry drills, and exploration rigs requiring heavy-duty hydraulic seals.
