High-Pressure Nitrile Rubber O-Ring for Hydraulic Rock Drills Engineered for extreme underground mining conditions, this O-ring ensures reliable sealing in high-pressure hydraulic rock drill applications. Constructed from nitrile rubber (NBR) with Shore A 70 hardness, it withstands continuous dynamic loads up to 30 MPa while resisting abrasion and chemical corrosion in harsh environments .
Technical Specifications & Design The O-ring features a 16 mm inner diameter (ISO 3601-1 Class B tolerance) and 24 mm outer diameter, designed for secure mounting in hydraulic cylinder assemblies and drill rig components. Its 2.4 mm cross-section thickness provides optimal compression set resistance, maintaining seal integrity under repetitive impact loads . The smooth surface finish (Ra ≤0.8 μm) minimizes friction during reciprocating motion, reducing wear and tear in high-cycle operations .
Performance Advantages
Vibration Resistance: Engineered to maintain dimensional stability in high-frequency oscillating systems, minimizing leakage in critical hydraulic connections.
Chemical Resistance: Resistant to mineral oils, hydraulic fluids, and common mining lubricants, extending service life by 30% compared to standard seals .
Precision Fit: Dimensions adhere to ISO 3601-1 Class B tolerances, ensuring compatibility with standard hydraulic system components.
Ease of Installation: Press-fit design with recommended 45 N·m torque simplifies assembly and reduces downtime .
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 prevent fluid leakage in high-pressure pivot points.
Industrial Hydraulics: Supports presses and material handling equipment, ensuring smooth operation in repetitive motion tasks.
