• Nitrile Image
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

N/A 30 N/A Black N/A General Purpose N/A false N/A false
N/A 40 N/A Black N/A General Purpose N/A false N/A false
N/A 40 N/A Black N/A Teflon Filled N/A false N/A false
N/A 40 N/A Black N/A Peroxide Cured N/A true N/A true
N/A 40 N/A White N/A FDA N/A true N/A true
N/A 40 N/A Black N/A 3-A, FDA N/A true N/A true
N/A 40 N/A Black N/A FDA N/A true N/A true
N/A 40 N/A Black N/A Oil Resistant, Good Elongation N/A false N/A false
N/A 40 N/A Black N/A N/A true N/A true
N/A 40 N/A Green N/A N/A true N/A true
N/A 50 N/A Blue N/A N/A true N/A true
N/A 50 N/A Black N/A FDA N/A false N/A false
N/A 50 N/A Black N/A Moly Filled N/A false N/A false
N/A 50 N/A Black N/A Teflon Filled N/A false N/A false
N/A 50 N/A Black N/A High Temperature N/A true N/A true
N/A 50 N/A Green N/A Internally Lubricated N/A true N/A true
N/A 50 N/A White N/A N/A false N/A false
N/A 50 N/A Yellow N/A Internally Lubricated N/A true N/A true
N/A 50 N/A Black N/A FDA, 3-A N/A true N/A true
N/A 50 N/A Black N/A FDA N/A false N/A false
N/A 50 N/A Black N/A Oil Resistant, Good Elongation N/A false N/A false
N/A 50 N/A Yellow N/A Low Compression Set N/A true N/A true
N/A 50 N/A Black N/A Internally Lubricated N/A true N/A true
N/A 50 N/A Blue N/A N/A true N/A true
N/A 50 N/A White N/A FDA, 3-A N/A true N/A true
N/A 50 N/A Black N/A Low Temperature N/A true N/A true
N/A 50 N/A Black N/A Low Temp, General Purpose N/A true N/A true
N/A 50 N/A Black N/A N/A true N/A true
N/A 50 N/A Black N/A AMS-R-6855 N/A true N/A true
N/A 50 N/A Black N/A Mil-G-1086 Type II N/A true N/A true
N/A 55 N/A Red N/A N/A false N/A true
N/A 60 N/A Black N/A Fuel Resistant N/A false N/A false
N/A 60 N/A Black N/A N/A true N/A true
N/A 60 N/A Black N/A Moly Filled N/A false N/A false
N/A 60 N/A Black N/A Teflon Filled N/A false N/A false
N/A 60 N/A Black N/A Graphite Filled N/A false N/A false
N/A 60 N/A Black N/A High Temperature N/A true N/A true
N/A 60 N/A Green N/A N/A false N/A false
N/A 60 N/A White N/A FDA, 3-A N/A true N/A true
N/A 60 N/A Gray N/A N/A true N/A true
N/A 60 N/A Blue N/A N/A false N/A false
N/A 60 N/A Black N/A FDA N/A true N/A true
N/A 60 N/A Rust Red N/A N/A false N/A false
N/A 60 N/A Yellow N/A N/A false N/A false
N/A 60 N/A White N/A FDA N/A false N/A false
N/A 60 N/A Black N/A General Purpose, AMS 3200 N/A false N/A false
N/A 60 N/A Black N/A Low Temperature N/A true N/A true
N/A 60 N/A Black N/A Ozone Resistant N/A true N/A true
N/A 60 N/A Black N/A BS 3222 M N/A false N/A false
N/A 60 N/A Black N/A AMS 3227 N/A true N/A true
N/A 60 N/A Black N/A Mil-R-6855 Class 1, Grade 60 N/A true N/A true
N/A 65 N/A Black N/A Conductive N/A false N/A false
N/A 65 N/A Black N/A FDA N/A true N/A true
N/A 65 N/A Black N/A Mil-Std-2190 N/A false N/A false
N/A 70 N/A Black N/A Water Resistant N/A true N/A true
N/A 70 N/A Black N/A Very Low Temperature N/A true N/A true
N/A 70 N/A Black N/A Moly Filled N/A true N/A true
N/A 70 N/A Black N/A Graphite Filled N/A false N/A false
N/A 70 N/A Black N/A High Temperature N/A true N/A true
N/A 70 N/A Green N/A N/A false N/A false
N/A 70 N/A Tan N/A FDA N/A false N/A false
N/A 70 N/A White N/A FDA, 3-A N/A false N/A false
N/A 70 N/A Gray N/A FDA N/A false N/A false
N/A 70 N/A Brown N/A N/A false N/A false
N/A 70 N/A Teal N/A N/A false N/A false
N/A 70 N/A Black N/A Good Bond to Metals N/A true N/A true
N/A 70 N/A Black N/A FDA, 3-A N/A true N/A true
N/A 70 N/A Rust Red N/A FDA N/A false N/A false
N/A 70 N/A Black N/A FDA, Non-Crazing N/A true N/A true
N/A 70 N/A Yellow N/A N/A true N/A false
N/A 70 N/A Black N/A Internally Lubricated N/A true N/A true
N/A 70 N/A Black N/A Internally Lubricated N/A true N/A true
N/A 70 N/A Blue N/A N/A false N/A false
N/A 70 N/A Black N/A High Temperature, AMS 7272 N/A true N/A true
N/A 70 N/A Black N/A AMS 7274 N/A false N/A false
N/A 70 N/A Black N/A Ozone Resistant, Low Temp N/A true N/A true
N/A 70 N/A Black N/A Low Temperature N/A true N/A true
N/A 70 N/A Black N/A Teflon Filled N/A true N/A true
N/A 70 N/A Light Blue N/A FDA N/A false N/A false
N/A 70 N/A Black N/A Teflon Filled N/A true N/A true
N/A 70 N/A Red N/A FDA N/A false N/A false
N/A 70 N/A Black N/A UL Approved, General Purpose N/A true N/A true
N/A 70 N/A Orange N/A N/A false N/A false
N/A 70 N/A Purple N/A N/A false N/A false
N/A 70 N/A Black N/A High Tensile N/A true N/A true
N/A 70 N/A Black N/A Low Temperature N/A true N/A true
N/A 70 N/A Black N/A Ultra Low Temperature N/A true N/A true
N/A 70 N/A Black N/A AMS 3228 N/A true N/A true
N/A 70 N/A Black N/A Internally Lubricated N/A true N/A true
N/A 70 N/A Blue N/A FDA, 3-A, Metal & X-ray Detectable N/A true N/A true
N/A 75 N/A Black N/A Teflon Filled N/A false N/A false
N/A 75 N/A Black N/A Oil Resistant N/A true N/A true
N/A 80 N/A Black N/A N/A true N/A true
N/A 80 N/A Black N/A Moly Filled N/A true N/A true
N/A 80 N/A Black N/A Teflon Filled N/A true N/A true
N/A 80 N/A Black N/A Graphite Filled N/A false N/A false
N/A 80 N/A Black N/A High Temperature N/A true N/A true
N/A 80 N/A Cream N/A FDA, 3-A N/A false N/A false
N/A 80 N/A Teal N/A N/A true N/A true
N/A 80 N/A Black N/A FDA N/A false N/A false
N/A 80 N/A Black N/A General Purpose, AMS 3213 N/A true N/A true
N/A 80 N/A Black N/A Internally Lubricated N/A false N/A false
N/A 80 N/A Blue N/A N/A true N/A true
N/A 80 N/A Black N/A N/A false N/A false
N/A 80 N/A Black N/A Low Temperature N/A true N/A true
N/A 80 N/A Red N/A N/A false N/A false
N/A 80 N/A Black N/A FDA N/A true N/A true
N/A 80 N/A Black N/A N/A true N/A true
N/A 80 N/A Black N/A Mil-G-1086 Type I N/A true N/A true
N/A 90 N/A Black N/A Moly Filled N/A true N/A true
N/A 90 N/A Black N/A Teflon Filled, FDA N/A true N/A true
N/A 90 N/A Black N/A Graphite Filled N/A true N/A true
N/A 90 N/A Black N/A High Temperature N/A true N/A true
N/A 90 N/A White N/A FDA, 3-A N/A false N/A false
N/A 90 N/A Black N/A FDA N/A false N/A false
N/A 90 N/A Blue N/A N/A false N/A false
N/A 90 N/A Black N/A Low Temp N/A true N/A true
N/A 90 N/A Yellow N/A N/A false N/A false
N/A 90 N/A Black N/A General Purpose N/A true N/A true
N/A 90 N/A Red N/A N/A true N/A true
N/A 90 N/A Black N/A FDA N/A true N/A true
N/A 90 N/A Black N/A SAE J515 Type CH N/A true N/A true
N/A 95 N/A Black N/A N/A false N/A false
N/A 95 N/A White N/A N/A false N/A false
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