3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea
3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea

3.1mm Cross Section O-Rings NBR Nitrile Rubber 85mm - 330mm OD Oil Resistant Sea

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🔧 Industrial 3.1mm NBR O-Rings | Heavy Duty Hydraulic Seals

Extra thick cross section for extreme pressure applications • 85mm-330mm OD range • Oil-resistant nitrile rubber

⚡ Extreme Pressure Rated • 🛡️ Maximum Durability
🛡️

3.1mm Cross Section

Extra heavy-duty thickness for maximum extrusion resistance in high-pressure systems

🌡️

Wide Temperature Range

Performs from -40°C to +120°C for industrial applications

🛢️

Oil-Resistant NBR

Premium nitrile rubber resistant to petroleum-based oils & hydraulic fluids

📏

Industrial Size Range

85mm to 330mm OD for large machinery & equipment applications

📋 Industrial NBR O-Rings Specifications

Material Type Nitrile Rubber (NBR/Buna-N) - Oil Resistant
Cross Section 3.1mm (Extra Heavy-Duty Thickness)
Outer Diameter Range 85mm to 330mm (Also available 10mm-350mm)
Hardness 70A Shore Durometer
Temperature Range -40°C to +120°C (-40°F to 248°F)
Color Black
Pressure Rating Extreme Pressure Applications (Consult for specifics)

🏭 Heavy Duty O-Rings Application Areas

These 3.1mm industrial o-rings are engineered for demanding applications, including:

  • 🏭 Hydraulic Presses & Systems - Extreme pressure sealing
  • 🚜 Heavy Machinery & Equipment - Mining & construction
  • 🔧 Industrial Cylinders - Large bore hydraulic & pneumatic
  • ⚙️ Manufacturing Equipment - Industrial automation systems
  • 🏗️ Construction Machinery - Cranes, excavators, bulldozers
  • 💧 High-Pressure Fluid Systems - Oil & hydraulic applications

💡 Professional Installation Tip: The 3.1mm cross-section requires proper groove design and professional installation tools. Ensure adequate clearance and use compatible lubricants for optimal performance in extreme pressure applications.

❓ Frequently Asked Questions - Industrial O-Rings

🔍 What makes 3.1mm o-rings suitable for extreme applications?

3.1mm cross-section o-rings provide maximum extrusion resistance for high-pressure systems. The extra thickness handles pressure spikes and extends service life in demanding industrial environments, such as hydraulic presses and heavy equipment.

🛠️ What pressure can these NBR o-rings withstand?

Our 3.1mm NBR o-rings with 70A hardness are rated for extreme pressure applications, typically handling pressures up to 5000 psi or higher with proper groove design. They're ideal for industrial hydraulic systems and heavy machinery.

📐 What groove design is needed for 3.1mm o-rings?

3.1mm o-rings require a precise groove design: recommended width 3.7-4.5mm with adequate clearance. Surface finish should be 16-32 RMS, with chamfered edges. Contact us for engineering specifications for your specific application.

⏱️ Are these suitable for continuous operation?

Yes, these heavy-duty o-rings are designed for continuous high-pressure operation. The NBR compound maintains properties under sustained pressure, while the 3.1mm cross-section provides long-term reliability in industrial environments.

📦 Do you offer engineering support for industrial applications?

Yes! We provide engineering support for gland design analysis, material selection, and application-specific recommendations. Contact our technical team with your pressure requirements and environmental conditions for professional assistance.

Ready for Extreme Pressure Sealing Performance?

Trust our industrial-grade 3.1mm NBR o-rings for reliable performance in demanding hydraulic and machinery applications.


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