Nitrile Compounds
Nitrile or Buna N Polymer
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.
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.
Item # |
Nominal Durometer |
Color |
Compound Features |
RoHS Compliant |
REACH Compliant |
---|---|---|---|---|---|
3919 | Nominal Durometer N/A 90 | Color N/A Black | Compound Features N/A Graphite Filled | RoHS Compliant N/A true | REACH Compliant N/A true |
3819 | Nominal Durometer N/A 80 | Color N/A Black | Compound Features N/A Graphite Filled | RoHS Compliant N/A false | REACH Compliant N/A false |
3719 | Nominal Durometer N/A 70 | Color N/A Black | Compound Features N/A Graphite Filled | RoHS Compliant N/A false | REACH Compliant N/A false |
3619 | Nominal Durometer N/A 60 | Color N/A Black | Compound Features N/A Graphite Filled | RoHS Compliant N/A false | REACH Compliant N/A false |
3740 | Nominal Durometer N/A 70 | Color N/A Black | Compound Features N/A Good Bond to Metals | RoHS Compliant N/A true | REACH Compliant N/A true |
3847 | Nominal Durometer N/A 80 | Color N/A Black | Compound Features N/A General Purpose, AMS 3213 | RoHS Compliant N/A true | REACH Compliant N/A true |
5606 | Nominal Durometer N/A 60 | Color N/A Black | Compound Features N/A General Purpose, AMS 3200 | RoHS Compliant N/A false | REACH Compliant N/A false |
5939 | Nominal Durometer N/A 90 | Color N/A Black | Compound Features N/A General Purpose | RoHS Compliant N/A true | REACH Compliant N/A true |
3405 | Nominal Durometer N/A 40 | Color N/A Black | Compound Features N/A General Purpose | RoHS Compliant N/A false | REACH Compliant N/A false |
3301 | Nominal Durometer N/A 30 | Color N/A Black | Compound Features N/A General Purpose | RoHS Compliant N/A false | REACH Compliant N/A false |
3505 | Nominal Durometer N/A 60 | Color N/A Black | Compound Features N/A Fuel Resistant | RoHS Compliant N/A false | REACH Compliant N/A false |
3744 | Nominal Durometer N/A 70 | Color N/A Black | Compound Features N/A FDA, Non-Crazing | RoHS Compliant N/A true | REACH Compliant N/A true |
7770 | Nominal Durometer N/A 70 | Color N/A Blue | Compound Features N/A FDA, 3-A, Metal & X-ray Detectable | RoHS Compliant N/A true | REACH Compliant N/A true |
3575 | Nominal Durometer N/A 50 | Color N/A White | Compound Features N/A FDA, 3-A | RoHS Compliant N/A true | REACH Compliant N/A true |
3541 | Nominal Durometer N/A 50 | Color N/A Black | Compound Features N/A FDA, 3-A | RoHS Compliant N/A true | REACH Compliant N/A true |
3925 | Nominal Durometer N/A 90 | Color N/A White | Compound Features N/A FDA, 3-A | RoHS Compliant N/A false | REACH Compliant N/A false |
3825 | Nominal Durometer N/A 80 | Color N/A Cream | Compound Features N/A FDA, 3-A | RoHS Compliant N/A false | REACH Compliant N/A false |
3741 | Nominal Durometer N/A 70 | Color N/A Black | Compound Features N/A FDA, 3-A | RoHS Compliant N/A true | REACH Compliant N/A true |
3625 | Nominal Durometer N/A 60 | Color N/A White | Compound Features N/A FDA, 3-A | RoHS Compliant N/A true | REACH Compliant N/A true |
3725 | Nominal Durometer N/A 70 | Color N/A White | Compound Features N/A FDA, 3-A | RoHS Compliant N/A false | REACH Compliant N/A false |
5944 | Nominal Durometer N/A 90 | Color N/A Black | Compound Features N/A FDA | RoHS Compliant N/A true | REACH Compliant N/A true |
5844 | Nominal Durometer N/A 80 | Color N/A Black | Compound Features N/A FDA | RoHS Compliant N/A true | REACH Compliant N/A true |
3444 | Nominal Durometer N/A 40 | Color N/A Black | Compound Features N/A FDA | RoHS Compliant N/A true | REACH Compliant N/A true |
5742 | Nominal Durometer N/A 70 | Color N/A Red | Compound Features N/A FDA | RoHS Compliant N/A false | REACH Compliant N/A false |
5728 | Nominal Durometer N/A 70 | Color N/A Light Blue | Compound Features N/A FDA | RoHS Compliant N/A false | REACH Compliant N/A false |