NBR O-ring 70 Shore A

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	Dimensions	Material	Hardness (Shore A)	Certification

O-ring Black	24.7 mm x 2.9 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	67 mm x 5.33 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	473 mm x 6.5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	10.15 mm x 1.95 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	221.6 mm x	NBR-Buna		Nee
O-ring Black	811 mm x 8 mm	NBR-Buna		Nee
O-ring Black	349 mm x 4 mm	NBR-Buna		Nee
O-ring Black	171.18 mm x 1.78 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	793 mm x 9 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	289 mm x 3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	50 mm x 7 mm	NBR-Buna		Nee
O-ring Black	99 mm x 9 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	784 mm x 8 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	622 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	37 mm x 3 mm	NBR-Buna		Nee
O-ring Black	99.4 mm x 5.7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	851 mm x 20 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	518 mm x 8.4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	319.3 mm x	NBR-Buna		Nee
O-ring Black	182 mm x 10 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	890 mm x 5.7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	746 mm x 3.5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	27.5 mm x	NBR-Buna		Nee
O-ring Black	60.4 mm x 5.33 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	620 mm x 9 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	743 mm x 8 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	74 mm x 2 mm	NBR-Buna		Nee
O-ring Black	13.9 mm x 0.8 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	619 mm x 5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	633 mm x 6 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	51.2 mm x	NBR-Buna		Nee
O-ring Black	3.4 mm x 1.7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	524 mm x 4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	29.9 mm x 5.5 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	284 mm x 9 mm	NBR-Buna	75 Shore A	Nee
O-ring Black	225 mm x 7 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	14.2 mm x 1.3 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	410 mm x 6 mm	NBR-Buna		Nee
O-ring Black	7.5 mm x 0.4 mm	NBR-Buna	70 Shore A	Nee
O-ring Black	463 mm x 7 mm	NBR-Buna	70 Shore A	Nee

29441 - 29480 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.