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Extra thick cross section for extreme pressure applications • 85mm-330mm OD range • Oil-resistant nitrile rubber
Extra heavy-duty thickness for maximum extrusion resistance in high-pressure systems
Performs from -40°C to +120°C for industrial applications
Premium nitrile rubber resistant to petroleum-based oils & hydraulic fluids
85mm to 330mm OD for large machinery & equipment applications
| 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) |
These 3.1mm industrial o-rings are engineered for demanding applications, including:
💡 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.
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.
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.
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.
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.
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.
Trust our industrial-grade 3.1mm NBR o-rings for reliable performance in demanding hydraulic and machinery applications.
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