NBR O-ring 70 Shore A

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	Dimensions	Material	Hardness (Shore A)	Certification

O-ring Black	320 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	42.53 mm x	NBR-Buna	62 Shore A	Nee
O-ring Black	109 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	86 mm x 1 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	145 mm x 10 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	686 mm x 7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	439 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	731 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	761 mm x 10 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	408 mm x 8 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	18 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	82.23 mm x	NBR-Buna	62 Shore A	Nee
O-ring Black	85 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	75 mm x 15 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	40 mm x 1 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	315 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	104 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	453 mm x 12 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	98 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	30 mm x 10 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	6.6 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	36 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	175 mm x 8 mm	NBR-Buna	70 Shore A	Ja
O-ring Black	177 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	145 mm x 15 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	80 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	165 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	23.8 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	41 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	9.6 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	380 mm x 9 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	45 mm x 14 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	190 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	37 mm x	NBR-Buna	70 Shore A	Nee
O-ring Black	46 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Gray	346 mm x 5 mm	NBR-Buna	70 Shore A	Ja
O-ring Black	172 mm x 2 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	14 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	93 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	88 mm x 6 mm	NBR-Buna	70 Shore A	Nee

241 - 280 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.