NBR (Nitrile) O-Rings at NewDealSeals

NBR (Nitrile) O-rings are a widely used type of synthetic rubber sealing component that excels in various industrial applications. Known for their versatility, durability, and cost-effectiveness, NBR O-rings play a crucial role in creating reliable seals that prevent leaks and maintain the integrity of machinery and equipment. In this text, we’ll explore what NBR (Nitrile) O-rings are and the key reasons why they are favored in sealing solutions.

What are NBR (Nitrile) O-Rings?

NBR, or Nitrile Butadiene Rubber, is a synthetic elastomer made from a combination of acrylonitrile and butadiene monomers. 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.

General properties NBR O-Rings

Temperature range:
Shore:
Relative cost
Tradenames:
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.

Why choose NBR (Nitrile) O-Rings?

    
  • Temperature Range: The recommended temperature range for nitrile rubber is typically between -40°C and 108°C. Special low-temperature Nitrile rubber types can handle temperatures as low as -54°C, while special high-temperature Nitrile rubber types can be used up to 135°C.
  • Limitations: It’s important to note that NBR is poorly resistant to ozone, sunlight, and weather influences. Therefore, Nitrile seals should not be stored near ozone-generating electric motors or equipment.
  • Typical Applications: NBR (Nitrile) O-rings are widely used in various industries, and typical products made from NBR include O-rings, hoses, gaskets, diaphragms, and hydraulic hoses. Due to their exceptional oil and fuel resistance, NBR O-rings are commonly found in automotive, marine, and oil and gas applications.

In conclusion, NBR (Nitrile) O-rings are versatile sealing solutions that offer durability, cost-effectiveness, and excellent resistance to oils and fuels. Their reliable sealing performance makes them an essential component in a wide range of applications across industries, ensuring the integrity and efficiency of machinery and equipment.

NBR O-Rings performs well in:

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

NBR O-Rings 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 O-Rings 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:

Food
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

Medical
USP class VI
ISO 10993
NSF 61 section 6

Oil & Gas
Norsok M710

Drinking water
WRAS
3-A

Gas appliances
DIN EN 549

Alternatives for NBR O-Rings or Nitrile O-Rings

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® 

CONTACT  FORM

    

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NewDealSeals B.V.

+31 (0) 226 362 233

info@newdealseals.com

Boezemschop 8, Breekland, 1724 BJ Oudkarspel, The Netherlands