NBR O-ring 70 Shore A

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	Dimensions	Material	Hardness (Shore A)	Certification

O-ring Gray	63 mm x 5 mm	NBR-Buna	70 Shore A	Ja
O-ring Black	152 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	137 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	330 mm x 10 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	320 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	71 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	72.40 mm x Goedefleibiliteitbijlagetemperaturen mm	NBR-Buna	70 Shore A	Nee
O-ring Black	49.22 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	3.4 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	72 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	586 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	546 mm x 7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	380.38 mm x Goedefleibiliteitbijlagetemperaturen mm	NBR-Buna	99 Shore A	Nee
O-ring Black	56.53 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	145 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	179 mm x 15 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	200 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	371 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	671 mm x 7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	1136 mm x 8 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	501 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	401 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	59.3 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	50 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	320 mm x 14 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	1011 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	497 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	187 mm x 7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	6.07 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	6.6 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	541 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	253 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	158.2 mm x	NBR-Buna	99 Shore A	Nee
O-ring Black	86 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	4 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	124 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	459.4 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	2.49 mm x	NBR-Buna	81 Shore A	Nee
O-ring Black	105 mm x 10 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	486 mm x 6 mm	NBR-Buna	70 Shore A	Nee

161 - 200 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.