Extreme-Temperature O-Ring for Hydraulic Rock Drills This O-ring is engineered to deliver reliable sealing in hydraulic rock drill systems exposed to wide temperature fluctuations, from cold underground mines to high-heat drill motor zones. Constructed from EPDM rubber, it offers exceptional resistance to water-glycol fluids, ozone, and weathering, making it ideal for both indoor and outdoor mining operations.
Key Performance Attributes
Material & Durability:
EPDM rubber (ethylene propylene diene monomer) provides superior resistance to water-based hydraulic fluids (e.g., water-glycol) and ozone degradation, outperforming nitrile rubber in damp or outdoor environments . Its 70 Shore A hardness ensures consistent compression in grooves, maintaining a tight seal under 20MPa pressure without extrusion.
The molded, splice-free design eliminates weak points, reducing failure risk during installation or vibration-induced movement. This construction supports a service life of 90,000+ cycles in standard operating conditions .
Sealing & Precision:
Compliant with ISO 3601-1 size tolerances, the O-ring ensures uniform fit in AS568 standard grooves, validated through 12,000-cycle pressure testing (ISO 18797) with zero measurable leakage. This precision minimizes pressure loss in critical components like pumps, valves, and cylinder ports .
Operational Compatibility:
The -40°C to +150°C temperature range makes it suitable for extreme cold (arctic mining) and moderate heat (near drill motors), maintaining elasticity across the entire spectrum. 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.
Applications
Hydraulic Rock Drills: Seals pump housings, valve bodies, and fluid line connections in systems using water-glycol or mineral oil fluids.
Mining Equipment: Compatible with tunneling machines, quarry drills, and exploration rigs requiring ozone-resistant, temperature-stable hydraulic seals.
