O-Ring 81401749 | High-Pressure Nitrile Rubber Sealing Ring for Hydraulic Rock Drills
O-Ring 81401749 | High-Pressure Nitrile Rubber Sealing Ring for Hydraulic Rock Drills - Image 2
O-Ring 81401749 | High-Pressure Nitrile Rubber Sealing Ring for Hydraulic Rock Drills - Image 3
O-Ring 81401749 | High-Pressure Nitrile Rubber Sealing Ring for Hydraulic Rock Drills - Image 4
O-Ring 81401749 | High-Pressure Nitrile Rubber Sealing Ring for Hydraulic Rock Drills - Image 5

O-Ring 81401749 | High-Pressure Nitrile Rubber Sealing Ring for Hydraulic Rock Drills

Part Number: 81401749
  • Material: Nitrile Rubber (NBR) with Shore A 70 hardness
  • Dimensions:
    • Inner Diameter:
    • Outer Diameter:
    • Cross-Section Thickness:
  • Weight: 0.002 kg (calculated based on NBR density of 1.2 g/cm³)
  • Temperature Range: -40°C to +100°C (ISO 16232-7 compliant)
  • Pressure Rating: Up to 30 MPa dynamic / 40 MPa static
  • Surface Finish: Ra ≤0.8 μm for low friction and extended service life
  • Compatibility: Direct fit for hydraulic rock drills requiring 16 mm bore diameter mounting
  • Certifications: ISO 3601-1 compliant for dimensional accuracy
Add to quote
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.

Related products

Looking for aftermarket parts?

WE ARE HERE TO
HELP!

Get a free quotation today!

  • +86 190 1691 5185
  • miningsparesltd@gmail.com

For more information about any of our services, don’t hesitate to get in touch. Our team is always happy to provide information about our quality crusher spare parts. To speed up your transaction, be sure to quote the OEM part number of your required parts.

Please enable JavaScript in your browser to complete this form.

ALROCK WEAR SOLUTION

Quick Links

By Brands

Link with Us

Facebook Linkedin Instagram Whatsapp
  • Tel: +86 190 1691 5185
  • +86 190 1691 5185
  • Whatsapp: +86 190 1691 5185
  • miningsparesltd@gmail.com

Copyright © 2025  | ®

“浙ICP备2024059923号-1