Oil-Resistant O-ring for Hydraulic Rock Drills This O-ring is engineered to provide reliable sealing in low-to-moderate pressure hydraulic rock drill systems, preventing fluid leakage in mining environments where exposure to mineral oils and temperature variations is common. Constructed from nitrile (NBR) rubber, it offers excellent resistance to petroleum-based fluids while maintaining flexibility, making it ideal for components like low-pressure valves, fluid lines, and auxiliary hydraulic connections.
Key Performance Attributes
Material & Durability:
Nitrile rubber retains elasticity and sealing capability after prolonged exposure to mineral oils and greases, with a 70 Shore A hardness that ensures proper compression in standard grooves. This material resists swelling in petroleum-based fluids, maintaining dimensional stability even after 5,000+ hours of contact .
The molded, splice-free design eliminates weak points, reducing the risk of tearing during installation or vibration-induced movement—critical for withstanding the operational shocks of rock drilling.
Sealing & Precision:
Compliant with ISO 3601-1 size tolerances, the O-ring ensures consistent fit in standard grooves, validated through 8,000-cycle pressure testing (ISO 18797) with zero measurable leakage. This precision minimizes pressure loss in auxiliary hydraulic circuits, supporting efficient drill operation .
Operational Compatibility:
The -35°C to +100°C temperature range makes it suitable for cold underground mines and moderate-heat zones, maintaining flexibility across the entire spectrum. It integrates seamlessly with existing hydraulic rock drill assemblies, supporting quick replacement during routine maintenance .
RoHS compliance ensures alignment with global environmental standards for mining equipment components.
Applications
Hydraulic Rock Drills: Seals low-pressure valves, fluid lines, and auxiliary hydraulic connections.
Mining Equipment: Compatible with tunneling machines, quarry drills, and exploration rigs using mineral oil-based hydraulic fluids.
