High-Pressure Nitrile Rubber O-Ring for Hydraulic Rock Drills Engineered for extreme underground mining conditions, this O-ring ensures reliable sealing in high-vibration hydraulic rock drill applications. Constructed from 70 Shore A nitrile rubber (NBR), it withstands continuous dynamic loads while resisting mineral oils and abrasion in harsh environments .
Technical Specifications & Design The O-ring features a 25 mm inner diameter (ID) and 3.5 mm cross-section (CS), adhering to ISO 3601-1 Class 1 dimensional tolerances for precision fit in hydraulic cylinder assemblies and drill rig components . Its nitrile rubber compound provides a temperature range of -40°C to +125°C, making it suitable for both cold and high-heat mining operations . The 20 MPa static pressure rating ensures durability in high-pressure hydraulic systems .
Performance Advantages
Chemical Resistance: Resistant to mineral oils, hydraulic fluids, and mild solvents, extending service life in corrosive mining environments .
Vibration Resistance: Engineered to maintain compression stability in high-frequency oscillating systems, minimizing leakage in critical hydraulic connections.
Precision Fit: ISO 3601-1 compliance ensures compatibility with standard hydraulic system components, reducing downtime during replacement .
Ease of Installation: Recommended compression rate of 15-20% simplifies assembly and maintenance processes .
Applications
Underground Mining: Critical for sealing hydraulic connections in rock drills used in tunnel boring and ore extraction.
Heavy Machinery: Used in excavators and loaders to seal high-pressure pivot points and hydraulic lines.
Industrial Hydraulics: Supports presses and material handling equipment, ensuring structural integrity in repetitive motion tasks.
