NBR O-ring 70 Shore A

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	Dimensions	Material	Hardness (Shore A)	Certification

O-ring Black	x	NBR-Buna
O-ring Black	x	NBR-Buna
O-ring Black	20 mm x 1 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	19.5 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	56 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	262 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	145 mm x 25 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	164.48 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	593 mm x 8 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	101.33 mm x	NBR-Buna	78 Shore A	Nee
O-ring Black	132 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	981 mm x 10 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	35.2 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	95 mm x 12 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	320 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	10.2 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	32 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	49 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	454 mm x 7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	200 mm x 7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	148 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	90 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	99 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	99 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	53 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	54.3 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	125 mm x 15 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	294 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	526 mm x 12 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	38 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Gray	601 mm x 8 mm	NBR-Buna	70 Shore A	Ja
O-ring Black	22 mm x 1 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	21 mm x 2 mm	NBR-Buna	70 Shore A	Ja
O-ring Black	430 mm x 16 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	37.6 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	114 mm x 14 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	265 mm x 14 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	16.36 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	1.42 mm x	NBR-Buna	78 Shore A	Nee
O-ring Black	128 mm x 7 mm	NBR-Buna	70 Shore A	Nee

1 - 40 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.