NBR O-Rings
Nitrile butadiene rubber (NBR) is the most widely used O-ring material in industrial applications, offering excellent resistance to petroleum-based oils, fuels, and hydraulic fluids. International Seal supplies NBR O-rings across the full range of AS568 and BS1806 standard sizes, with non-standard and custom dimensions available on request.
NBR O-rings operate effectively across a temperature range of -40°C to +120°C, making them suitable for the majority of general industrial sealing applications. They are commonly specified in hydraulic systems, pneumatic equipment, automotive components, and fluid power applications.
- Temperature range: -40°C to +120°C
- Excellent resistance to oils, fuels and hydraulic fluids
- Good mechanical strength and wear resistance
- Available in hardness grades from 40 to 90 Shore A
- Hydraulic and pneumatic cylinders
- Pumps and valves
- Automotive and fluid power systems
- General industrial machinery
FAQ
What is the difference between NBR and EPDM O-rings?
NBR offers superior resistance to oils and fuels, while EPDM is better suited to water, steam, and chemical applications. NBR is the standard choice for hydraulic and pneumatic systems.
Can I order NBR O-rings in non-standard sizes?
Yes. International Seal can supply custom-dimensioned NBR O-rings. Contact us with your cross-section and inside diameter requirements
What hardness grades are available?
We supply NBR O-rings in 70 Shore A as standard, with 40, 60, 80 and 90 Shore A available on request.