NBR O-ring 70 Shore A

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	Dimensions	Material	Hardness (Shore A)	Certification

O-ring Black	291 mm x 8 mm	NBR-Buna	70 Shore A	Ja
O-ring Black	304.9 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	417 mm x 12 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	46 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	155 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	18.5 mm x	NBR-Buna	70 Shore A	Nee
O-ring Gray	45 mm x 7 mm	NBR-Buna	70 Shore A	Ja
O-ring Black	118 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	105 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	51.7 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	108 mm x 8 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	520 mm x 10 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	164.3 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	16 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	6 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	75 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	23 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	5.9 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	299.4 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	218 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	210 mm x 11 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	147 mm x 9 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	225 mm x 8 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	17 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	21 mm x 12 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	1261 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	68 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	5 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	137 mm x 8 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	51 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	281 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	45 mm x 7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	143 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	35 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	101.28 mm x	NBR-Buna	62 Shore A	Nee
O-ring Black	11 mm x 1 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	364 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	36 mm x 11 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	551 mm x 13 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	401 mm x 10 mm	NBR-Buna	70 Shore A	Nee

281 - 320 of 29564 products

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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 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.