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Nitrile Compounds

 
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Nitrile (NBR) is a copolymer of Acrylonitrile and Butadiene rubbers. The ratio of the two polymers affects the properties of a rubber compound. Raising the acrylonitrile content will increase resistance to oil and solvents and improve abrasion resistance. Lowering the acrylonitrile content improves low temperature properties, compression set and fuel resistance.

While Nitrile rubber is considered to be a general purpose material for O-Rings and many other seals, it can be specifically compounded for many purposes. Grades are available for: food processing, use with milk and edible oils, potable water and other specialty applications. Internal lubricants may be added to reduce frictional properties and extend wear. Specialty Nitrile polymers can be produced by carboxylation (see carboxylated Nitrile) or hydrogenation (see HNBR).

The service temperature for PAI Nitrile compounds varies on the low end from -90º to -15º F (-65º to -25º C) depending on acrylonitrile content. On the high side continuous service varies from 225º F to 300º F depending on the curing agent used. PAI offers NBR compounds in hardness ranges from 30 to 95 durometer. Black is the standard color, but many other colors are available.

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Item #

Nominal Durometer

Color

Compound Features

RoHS Compliant

REACH Compliant
3301 30 Black General Purpose false false
3405 40 Black General Purpose false false
3418 40 Black Teflon Filled false false
3420 40 Black Peroxide Cured true true
3425 40 White FDA true true
3441 40 Black 3-A, FDA true true
3444 40 Black FDA true true
3447 40 Black Oil Resistant, Good Elongation false false
3451 40 Black N/A true true
603401 40 Green N/A true true
3500-03 50 Blue N/A true true
3500-11 50 Black FDA false false
3517 50 Black Moly Filled false false
3518 50 Black Teflon Filled false false
3520 50 Black High Temperature true true
3523 50 Green Internally Lubricated true true
3525 50 White N/A false false
3526 50 Yellow Internally Lubricated true true
3541 50 Black FDA, 3-A true true
3544 50 Black FDA false false
3547 50 Black Oil Resistant, Good Elongation false false
3556 50 Yellow Low Compression Set true true
3558 50 Black Internally Lubricated true true
3562 50 Blue N/A true true
3575 50 White FDA, 3-A true true
  Results 1 - 25 of 124 1 2 3 4 5 
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