NBR O-rings 50 Shore A

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	Dimensions	Material	Hardness (Shore A)	Certification

O-ring Black	21 mm x 2 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	190 mm x 5 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	27.9 mm x	NBR-Buna	50 Shore A	Nee
O-ring Black	32 mm x 8 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	4 mm x 2 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	18 mm x 2 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	126 mm x 5 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	72 mm x 2 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	20.36 mm x 1.78 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	250 mm x 8 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	59 mm x 6 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	24 mm x 5 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	183 mm x 9 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	221 mm x 5 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	6 mm x 1 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	19 mm x 4 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	172 mm x 3 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	1.07 mm x	NBR-Buna	50 Shore A	Nee
O-ring Black	11 mm x 2 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	18.2 mm x 1.6 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	23.84 mm x 6.48 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	169.3 mm x	NBR-Buna	50 Shore A	Nee
O-ring Black	75 mm x 4 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	221.63 mm x	NBR-Buna	50 Shore A	Nee
O-ring Black	325 mm x 10 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	79 mm x 4 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	16 mm x 5 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	49 mm x 1.5 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	22 mm x 6 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	54 mm x 3 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	120.26 mm x	NBR-Buna	50 Shore A	Nee
O-ring Black	25 mm x 4 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	39 mm x 2 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	63.23 mm x	NBR-Buna	50 Shore A	Nee
O-ring Black	304 mm x 3 mm	NBR-Buna	50 Shore A	Ja
O-ring Black	126.73 mm x	NBR-Buna	50 Shore A	Nee
O-ring Black	49 mm x 1 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	44 mm x 3 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	90 mm x 3 mm	NBR-Buna	50 Shore A	Nee
O-ring Black	88.6 mm x 3.53 mm	NBR-Buna	50 Shore A	Nee

321 - 360 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.