NBR O-rings 50 Shore A

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	Dimensions	Material	Hardness (Shore A)	Certification

O-ring Black	42 mm x 2 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	325 mm x 5 mm	NBR-Buna	50 Shore A	Ja
O-ring Black	17 mm x 4 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	95 mm x 3 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	7.5 mm x	NBR-Buna	50 Shore A	Nee
O-ring Black	141 mm x 6 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	70 mm x 4 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	46.100 mm x 6.99 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	94.85 mm x 3.53 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	3.3 mm x	NBR-Buna	50 Shore A	Nee
O-ring Black	231 mm x 4 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	16 mm x 2 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	60.05 mm x 1.78 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	30 mm x 14 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	58.9 mm x 11.1 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	21.6 mm x 6 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	74 mm x 3 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	30 mm x 6 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	380 mm x 6 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	46 mm x 10 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	103 mm x 10 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	210 mm x 12 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	26.3 mm x 3 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	655 mm x 5 mm	NBR-Buna	50 Shore A	Ja
O-ring Black	249 mm x 9 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	20 mm x 2 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	299 mm x 10 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	28.18 mm x	NBR-Buna	50 Shore A	Nee
O-ring Black	22 mm x 4 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	275 mm x 3 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	40.88 mm x 3.53 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	110 mm x 8 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	82 mm x 2 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	110.50 mm x 6.99 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	335 mm x 6 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	2 mm x 1 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	135 mm x 15 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	65 mm x 3 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	73 mm x 3 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	6 mm x 2 mm	NBR-Buna	50 Shore A	Nee

161 - 200 of 509 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 50 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 50 Shore A made from NBR, please send us a Direct Enquiry. Together we can discuss the specifications and find the right product for you.