NBR O-ring 70 Shore A

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ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 230x5.33 NBR - 70 Shore A - Black - ses-177769 O-ring Black231 mm  x 5.33 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 418x5.7 NBR - 70 Shore A - Black - ses-91040 O-ring Black419 mm  x 5.7 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 571x5.33 NBR - 70 Shore A - Black - ses-250601 O-ring Black571 mm  x 5.33 mm NBR-Buna70 Shore A Neeicon-bekijk icon
Placeholder O-ring Black817 mm  x 5.33 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 977.9x3.53 NBR - 70 Shore A - Black - ses-479158 O-ring Black977.10 mm  x 3.53 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 29.71x3.16 NBR - 70 Shore A - Black - ses-316956 O-ring Black29.72 mm  x 3.16 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 14.5x4.5 NBR  Shore A - Black - ORSV2-14.5x4.4-NBR O-ring Black14.5 mm  x NBR-BunaNeeicon-bekijk icon
O-Ring 372x5 NBR  Shore A - Black - ORSV2-372x5-NBR O-ring Black373 mm  x 5 mm NBR-BunaNeeicon-bekijk icon
O-Ring 715x8 NBR  Shore A - Black - ORSV2-715x7-NBR O-ring Black716 mm  x 8 mm NBR-BunaNeeicon-bekijk icon
O-Ring 341x10 NBR - 70 Shore A - Black - ses-251287 O-ring Black342 mm  x 10 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 17.91x2.54 NBR - 70 Shore A - Black - ses-316241 O-ring Black17.92 mm  x 2.54 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 65.4x1.67 NBR - 70 Shore A - Black - ses-94828 O-ring Black65.5 mm  x 1.67 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 138x3 NBR - 70 Shore A - Black - ses-9160 O-ring Black138 mm  x 3 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 299.1x8.4 NBR - 70 Shore A - Black - ses-12852 O-ring Black299.2 mm  x 8.4 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 631x4 NBR - 70 Shore A - Black - ses-246206 O-ring Black632 mm  x 4 mm NBR-Buna70 Shore A Neeicon-bekijk icon
Placeholder O-ring Black815 mm  x 5.3 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 101x4.5 NBR - 70 Shore A - Black - ses-8935 O-ring Black101 mm  x 4.5 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 295x8.6 NBR - 70 Shore A - Black - ses-317851 O-ring Black296 mm  x 8.6 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 561x3 NBR - 70 Shore A - Black - ses-250194 O-ring Black561 mm  x 3 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 844x15.88 NBR - 70 Shore A - Black - ses-212579 O-ring Black845 mm  x 15.88 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 1155.7x6.5 NBR - 70 Shore A - Black - ses-212491 O-ring Black1155.8 mm  x 6.5 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 40.06x2.7 NBR - 70 Shore A - Black - ses-175605 O-ring Black40.07 mm  x 2.7 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 649x9 NBR - 70 Shore A - Black - ses-247701 O-ring Black650 mm  x 9 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 29.3x1.6 NBR - 70 Shore A - Black - ses-318019 O-ring Black29.4 mm  x 1.6 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 126.4x7 NBR - 70 Shore A - Black - ses-528597 O-ring Black126.5 mm  x 7 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 307.37x7.95 NBR - 70 Shore A - Black - ses-479090 O-ring Black307.38 mm  x 7.95 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 494.5x8 NBR - 70 Shore A - Black - ses-51085 O-ring Black494.6 mm  x 8 mm NBR-Buna70 Shore A Neeicon-bekijk icon
Placeholder O-ring Black811 mm  x 5 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 1025x5.34 NBR - 70 Shore A - Black - ses-234673 O-ring Black1026 mm  x 5.34 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 189.87x6.99 NBR  Shore A - Black KTW - ORSV2-189.87x6.99-NBR O-ring Black189.88 mm  x NBR-Buna99 Shore A Jaicon-bekijk icon
O-Ring 47.5x1.8 NBR - 70 Shore A - Black - ses-175695 O-ring Black47.6 mm  x 1.8 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 60x12 NBR - 70 Shore A - Black - ses-10099 O-ring Black60 mm  x 12 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 44x2 NBR  Shore A - Black - ORSV2-44x2-NBR O-ring Black44 mm  x 2 mm NBR-BunaNeeicon-bekijk icon
O-Ring 874.5x8.4 NBR  Shore A - Black - ORSV2-874.5x8.3-NBR O-ring Black874.6 mm  x NBR-BunaNeeicon-bekijk icon
O-Ring 152x3.53 NBR  Shore A - Black - ORSV2-152x3.53-NBR O-ring Black152 mm  x 3 mm NBR-BunaNeeicon-bekijk icon
O-Ring 44.2x5.7 NBR  Shore A - Black - ORSV2-44.2x5.7-NBR O-ring Black44.3 mm  x NBR-BunaNeeicon-bekijk icon
O-Ring 864x10 NBR  Shore A - Black - ORSV2-864x9-NBR O-ring Black865 mm  x 10 mm NBR-BunaNeeicon-bekijk icon
O-Ring 42x5.5 NBR - 70 Shore A - Black - ses-8358 O-ring Black42 mm  x 5.5 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 148.6x7 NBR - 70 Shore A - Black - ses-528617 O-ring Black148.7 mm  x 7 mm NBR-Buna70 Shore A Neeicon-bekijk icon
O-Ring 284x3.5 NBR - 70 Shore A - Black - ses-50498 O-ring Black284 mm  x 3.5 mm NBR-Buna70 Shore A Neeicon-bekijk icon

The origin of NBR

Nitrile-butadiene rubber (NBR) was developed by the chemical company ‘I.G. Farbenindusty’ from Germany between WWI and WWII. At first the material was called Buna-N® and was later renamed to Perbunan®. The material first came to market in the 30s and is nowadays the most used elastomer for standard seals like O-rings and other seals.

What is NBR?

NBR is an elastomer, which is a synthetic polymer obtained by the copolymerization of acrylonitrile and 1,3-butadiene. The characteristics are partly determined by the amount of acrylonitrile in the material and this varies from 18 to 50 percent. As the acrylonitrile increases, resistance to petroleum base oils and hydrocarbon fuels increases, but low temperature flexibility decreases and the rubber can become brittle.

What is NBR used for?

  • Seals
  • O-rings
  • Gaskets
  • Pipe and Cable Covers

The advantages of NBR

  • Resistant against oils, fats, hydrocarbons, diluted acids
  • Has good mechanical qualities and is wear-resistant
  • Good resistance to heat
  • It is powerful and elastic
  • It has a working temperature range of -35°C tot + 120°C (-30 ° F tot + 250 ° F)

The downside of NBR

  • It has limited resistance to weather and ozone conditions
  • Not well resistant to aromatic compounds, halogenated hydrocarbons, ketone brake fluids and strong acids
  • Must be kept out of direct sunlight
  • The working temperature range is limited in comparison to other materials

On this page we offer our range of 70 Shore A O-Rings. Search for your specific O ring by using the filters on the left of the page or take your time and browse our wide range of our products. When you can not find the product you are looking for in our 70 Shore A made from NBR, please send us a Direct Enquiry. Together we can discuss the specifications and find the right product for you.