General Information
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Common Name:
Nitrile, Buna-N, NBR
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Chemical Name:
Acrylonitrile-butadiene
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Generally Resistant To:
Gases, Aliphatic Hydrocarbon, Oils and Fuels
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Generally Attacked By:
Ketones, Ozone, Sunlight, Aromatic Oil, Flame, Weather
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ASTM D 2000 / SAE J200 Classification:
BF, BG, BK, CH
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MIL-R-3065 / SAE J-14 / MIL-STD-417 Classification:
SB
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ASTM D-1418 Designation:
NBR
Physical Properties
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Elongation:
400% to 600%
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Hardness Range (Durometer Shore A):
35 to 90
Mechanical Properties
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Compression Set:
Good
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Rebound Rating:
Good
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Flex Cracking Resistance:
Good
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Abrasion Resistance:
Good to Excellent
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Tear Resistance:
Good
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Impact Resistance:
Fair to Good
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Flame Resistance:
Poor
Thermal Properties
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Minimum Service Temperature:
-30°F to -70°F
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Maximum Service Temperature:
+220 to +280°F
Environmental Resistance
-
Recommended Shelf Life:
5 to 10 years
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Weather Resistance:
Poor
-
Sunlight Resistance:
Poor
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Ozone Resistance:
Poor
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Oxidization Resistance:
Good
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Water Resistance:
Good to Excellent
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Steam Resistance:
Fair
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Gas Permeability:
Fair to Good
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Radiation Resistance:
Good, 1 x 105 Ga Gy
Fair, 6 x 105 Ga Gy
Chemical Resistance
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Acetone:
NOT RECOMMENDED
-
Amonium Hydroxide:
NOT RECOMMENDED
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Animal Fats:
RECOMMENDED: Little or Minor Effect
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Carbon Dioxide:
RECOMMENDED: Little or Minor Effect
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Chlorine:
-
DRY:
- - -
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WET:
- - -
-
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Fluorine (Liquid):
- - -
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Fuel Oil:
RECOMMENDED: Little or Minor Effect
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Gasoline:
RECOMMENDED: Little or Minor Effect
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Hydrochloric Acid 37%:
-
HOT:
NOT RECOMMENDED
-
COLD:
Minor to Moderate Effect
-
-
Hydrochloric Acid Concentrate 37%:
-
HOT:
NOT RECOMMENDED
-
COLD:
NOT RECOMMENDED
-
-
Kerosene:
RECOMMENDED: Little or Minor Effect
-
Methyl Ethyl Ketone:
NOT RECOMMENDED
-
Mineral Oil:
RECOMMENDED: Little or Minor Effect
-
Naptha:
Moderate to Severe Effect
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Natural Gas:
RECOMMENDED: Little or Minor Effect
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Nitric Acid:
-
Concentrate:
NOT RECOMMENDED
-
Dillute:
NOT RECOMMENDED
-
Red Fuming:
NOT RECOMMENDED
-
-
Petroleum:
-
Below 250:
RECOMMENDED: Little or Minor Effect
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Above 250:
Moderate to Severe Effect
-
-
Phosphoric Acid:
-
20%:
Minor to Moderate Effect
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45%:
NOT RECOMMENDED
-
-
Propane:
RECOMMENDED: Little or Minor Effect
-
Salt Water:
RECOMMENDED: Little or Minor Effect
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Skydrol:
-
Skydrol 500:
NOT RECOMMENDED
-
Skydrol 7000:
NOT RECOMMENDED
-
-
Sodium Hydroxide:
Minor to Moderate Effect
-
Sulfuric Acid:
-
Concentrate:
NOT RECOMMENDED
-
Dillute:
NOT RECOMMENDED
-
20% Oleum:
NOT RECOMMENDED
-
-
Toluene:
NOT RECOMMENDED
-
Transformer Oil:
RECOMMENDED: Little or Minor Effect
-
Vegetable Oils:
RECOMMENDED: Little or Minor Effect
-
Vinegar:
Minor to Moderate Effect