NBR O-ring 70 Shore A

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	Dimensions	Material	Hardness (Shore A)	Certification

O-ring Black	69 mm x 3 mm	NBR-Buna		Nee
O-ring Black	89 mm x 5 mm	NBR-Buna		Nee
O-ring Black	713 mm x 9 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	615.94 mm x 3.53 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	144.3 mm x 5.7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	730.6 mm x 7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	85.33 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	853 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	824 mm x 5.3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	626 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	62.6 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	31.9 mm x 3.1 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	748 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	342.10 mm x 5.34 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	204 mm x 3 mm	NBR-Buna	70 Shore A	Ja
O-ring Black	8.8 mm x 0.7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	963 mm x 8.4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	329.80 mm x	NBR-Buna		Nee
O-ring Black	915 mm x 6.35 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	42 mm x 2 mm	NBR-Buna		Nee
O-ring Black	832 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	25 mm x 12 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	555 mm x 3.5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	23 mm x 1 mm	NBR-Buna		Nee
O-ring Black	777 mm x 9 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	84 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	361 mm x 11 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	402 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	53.3 mm x 5.7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	153 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	830 mm x 5.7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	66 mm x 5.3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	719 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	114 mm x 12 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	111 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	188 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	202.58 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	268 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	25 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	179 mm x 2 mm	NBR-Buna		Nee

29521 - 29560 of 29564 products

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.