NBR O-ring 70 Shore A

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	Dimensions	Material	Hardness (Shore A)	Certification

O-ring Black	218.7 mm x 5.7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	21 mm x 2 mm	NBR-Buna		Nee
O-ring Black	4 mm x 1 mm	NBR-Buna		Nee
O-ring Black	60 mm x 2 mm	NBR-Buna		Nee
O-ring Black	86 mm x 4 mm	NBR-Buna		Nee
O-ring Black	137 mm x 4 mm	NBR-Buna		Nee
O-ring Black	306 mm x 4 mm	NBR-Buna		Nee
O-ring Black	486 mm x 6 mm	NBR-Buna		Nee
O-ring Black	72 mm x 7 mm	NBR-Buna		Nee
O-ring Black	4.09 mm x 1.6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	10.70 mm x 1.68 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	48.3 mm x 1 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	103.52 mm x 3.18 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	130 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	163.9 mm x 7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	269 mm x 3.5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	415 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	466 mm x 5.33 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	650 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	768 mm x 10 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	841 mm x 7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	923 mm x 3.5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	1241 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	17.9 mm x 2.4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	108 mm x 4.5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	722 mm x 10 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	18 mm x 3.55 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	37.5 mm x 1.25 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	57.10 mm x 1.35 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	83.20 mm x 3.1 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	228 mm x 2.6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	162 mm x 8 mm	NBR-Buna	75 Shore A	Nee
O-ring Black	20.30 mm x	NBR-Buna	62 Shore A	Nee
O-ring Black	371 mm x 6 mm	NBR-Buna		Nee
O-ring Black	62 mm x 5 mm	NBR-Buna		Nee
O-ring Black	90 mm x 2 mm	NBR-Buna		Nee
O-ring Black	109.6 mm x	NBR-Buna		Nee
O-ring Black	3 mm x 3 mm	NBR-Buna		Nee
O-ring Black	728 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	49 mm x 4 mm	NBR-Buna		Nee

29161 - 29200 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.