NBR, Nitrile O-Rings & Seals

Nitrile rubber is the most commonly used elastomer for O-Rings and other seals. Also known as Buna N, Nitrile, NBR. NBR O-Rings have a high tensile strength and good resistance to scratches, cracks and pressure deformation. The material and production costs of nitrile rubber are low compared to other elastomers.

The recommended temperature range of nitrile rubber is between -40 and 108 °C. Special low temperature Nitrile rubber types can handle temperatures of -54 °C. Special high temperature Nitrile rubber types can be used up to 135 °C. It is important to know that nitrile rubber is poorly resistant to ozone, sunlight and weather influences. The Nitrile seals must not be stored in the vicinity of ozone-generating electric motors or equipment.

Typical products for nitrile rubber are: O-rings, hoses, gaskets, diaphragms and hydraulic hoses. Due to its oil and fuel resistance, NBR O-rings are commonly used in automotive, marine and oil and gas applications.

NewDealSeals supplies Nitrile O-Rings & NBR seals in any dimension and in various compounds. Do you need expertise and quality service? Call +31(0)226362233 or mail us info@newdealseals.com.

General properties NBR

Temperature range:
Relative cost
Common names:
Colours available:

-40 to 108 °C
30 / 40 / 50 / 60 / 70 / 80 / 90
Krynac® (LANXESS), Nipol® (Zeon Chemicals)
Nitrile, Buna-N, NBR
Black. Other colors on request.

NBR performs well in

  • Petroleum oils & fuels
  • Silicone oils & greases
  • Ethylene glycol
  • Dilute acids
  • Water

NBR does not perform well in

  • Aromatic hydrocarbons (benzene, toluene, xylene)
  • Automotive brake fluid
  • Halogen derivatives (carbon tetrachloride, trichloroethylene)
  • Ketones (MEK, acetone)
  • Phosphate ester hydraulic fluids (Skydrol®, Pydraul®)
  • Strong acids

Typical NBR Applications

  1. Automotive, marine and aircraft fuel systems
  2. Shaft seals in oil applications
  3. Low temperature applications
  4. Hydraulic hoses
  5. Nitrile tubing

Certifications & compliances

Newdealseals offers a wide range of products & materials that are certified and/or in compliance with industry specific standards. Examples of certifications and compliances:

FDA CFR 21.177.2600 (A-D) Dry foods
FDA CFR 21.177.2600 (A-F) Fatty foods
EC 1935/2004 compliance
EC 2023/2006 compliance
BFR Class XV

USP class VI
ISO 10993
NSF 61 section 6

Oil & Gas
Norsok M710

Drinking water


Gas appliances
DIN EN 549

Alternatives for NBR, Nitrile O-Rings & Seals

Do you want improved low temperature properties?

Do you want better overal chemical resistance & higher temperature resistance?

VMQ, Silicone O-Rings

Temperature range (-54 to 232 °C). Very suitable for mineral oils. Good flexibility, low compression set, ozone and UV-resistant.

VMQ, Silicone 

FKM, Viton® O-Rings

Temperature range (-25 to 204 °C). Very good resistance to chemicals, oils, ozone and UV. Suitable for static and light dynamic applications.

FKM, Viton® 



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NewDealSeals B.V.

+31 (0) 226 362 233


Boezemschop 8, Breekland, 1724 BJ Oudkarspel, The Netherlands