Oil-Resistant O-Ring for Hydraulic Rock Drills This O-ring is engineered to provide reliable sealing in hydraulic rock drill components, preventing fluid leakage in mining environments where exposure to mineral oils and fluctuating temperatures is common. Constructed from NBR rubber, it balances flexibility for tight sealing with resistance to petroleum-based fluids, making it ideal for standard hydraulic systems in rock drills.
Key Performance Attributes
Material & Durability:
NBR rubber (nitrile butadiene rubber) offers excellent resistance to mineral oils, greases, and petroleum-based hydraulic fluids—maintaining elasticity even after prolonged exposure. Its 70 Shore A hardness ensures proper compression in grooves, creating a secure seal without excessive deformation under 25MPa pressure .
The molded, splice-free design eliminates weak points, reducing the risk of tearing during installation or operation. This construction extends service life to 80,000+ cycles in standard conditions .
Sealing & Precision:
Compliant with ISO 3601-1 size tolerances, the O-ring ensures consistent fit in standard AS568 grooves, validated through 10,000-cycle pressure testing (ISO 18797) with zero measurable leakage. This precision minimizes pressure loss in valves, cylinder ports, and fluid line connections .
Operational Compatibility:
The -30°C to +120°C temperature range makes it suitable for cold underground mines and moderate-heat zones near drill components. It integrates seamlessly with existing hydraulic rock drill assemblies, supporting quick replacement during maintenance .
RoHS compliance ensures alignment with global environmental standards for mining equipment components.
Applications
Hydraulic Rock Drills: Seals valve bodies, cylinder heads, and fluid line connections.
Mining Equipment: Compatible with tunneling machines, quarry drills, and exploration rigs using mineral oil-based hydraulic fluids.
