NBR O-rings 90 Shore A

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	Dimensions	Material	Hardness (Shore A)	Certification

O-ring Black	877 mm x 5.7 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	908 mm x 10 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	938 mm x 9 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	969 mm x 5.33 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	1221 mm x 7 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	264 mm x 4 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	722 mm x 6.5 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	626 mm x 10 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	72.6 mm x 3.53 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	574 mm x 5.33 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	778 mm x 5.34 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	355 mm x 3.53 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	838 mm x 9 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	749.4 mm x 9.53 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	877 mm x 6.99 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	911 mm x 6 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	941 mm x 5.33 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	985 mm x 4 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	1624 mm x 10 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	16.2 mm x 3 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	144.4 mm x 8.38 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	123 mm x 12 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	736 mm x 6.5 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	896 mm x 5 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	934 mm x 5.7 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	963 mm x 6 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	1141 mm x 12 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	9.6 mm x 3.25 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	140.6 mm x 2.62 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	47.3 mm x 2.4 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	261 mm x 10 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	8.15 mm x 1.02 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	719 mm x 5.7 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	24 mm x 1.6 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	626 mm x 5.33 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	12 mm x 2.1 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	32.9 mm x 4.6 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	28 mm x 8.75 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	29.3 mm x 2.62 mm	NBR-Buna	90 Shore A	Nee
O-ring Black	37.7 mm x 4.5 mm	NBR-Buna	90 Shore A	Nee

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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 90 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 90 Shore A made from NBR, please send us a Direct Enquiry. Together we can discuss the specifications and find the right product for you.