NBR O-ring 70 Shore A

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	Dimensions	Material	Hardness (Shore A)	Certification

O-ring Black	39 mm x 3 mm	NBR-Buna		Nee
O-ring Black	57 mm x 5 mm	NBR-Buna		Nee
O-ring Black	76.6 mm x	NBR-Buna		Nee
O-ring Black	4.6 mm x 1.85 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	9.6 mm x 1.9 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	45 mm x 5.3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	65 mm x 12 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	90.6 mm x 1.5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	100.84 mm x 3.27 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	232 mm x 9.52 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	276 mm x 7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	19.8 mm x 3.5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	365 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	11.1 mm x 3.17 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	462 mm x 3.5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	31.5 mm x 1.3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	638 mm x 14.7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	67.10 mm x 2.3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	688 mm x 5.7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	112.79 mm x 2.69 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	807 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	159.7 mm x 3.2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	203.3 mm x 11 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	339 mm x 8.4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	537 mm x 8.4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	499.6 mm x 7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	611 mm x 8 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	770 mm x 5.33 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	826 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	920 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	131 mm x 3 mm	NBR-Buna		Nee
O-ring Black	28 mm x 5 mm	NBR-Buna		Nee
O-ring Black	42 mm x 3 mm	NBR-Buna		Nee
O-ring Black	64 mm x 2 mm	NBR-Buna		Nee
O-ring Black	86 mm x 4 mm	NBR-Buna		Nee
O-ring Black	957 mm x 3.5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	7.45 mm x 0.89 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	27 mm x 0.7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	190.6 mm x 3.17 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	730 mm x 9 mm	NBR-Buna	70 Shore A	Nee

29121 - 29160 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.