Nitrile (NBR)

Abbreviation:

NBR

ASTM D-2000 Classification:

BF, BG, BK

Chemical Definition:

Acrylonitrile Butadiene

 

Physical & Mechanical Properties

  • Durometer or Hardness 20 - 95 Shore A
  • Tensile Strength 200 - 3500 PSI
  • Elongation % 350% - 650%
  • Abrasion Resistance Good to Excellent
  • Adhesion to Metal Excellent
  • Adhesion to Rigid Materials Good to Excellent
  • Compression Set Good to Excellent
  • Flex Cracking Resistance Fair to Good
  • Impact Resistance Fair to Good
  • Resilience/Rebound Good
  • Tear Resistance Good to Excellent
  • Vibration Dampening Fair to Good

Thermal Properties

  • Low Temperature -70° F to 0° F
  • Minimum for Continuous Use (static) -40° F
  • Brittle Point -70° F to 0° F
  • High Temperature +210° F to 250° F
  • Maximum for Continuous Use (static) +250° F

Environmental Performance

  • Colorability Excellent
  • Flame Resistance Poor
  • Gas Permeability Fair to Excellent
  • Odor Good
  • Ozone Resistance Fair to Good
  • Oxidation Resistance Good
  • Radiation Resistance Fair to Good
  • Steam Resistance Fair to Good
  • Sunlight Resistance Poor to Good
  • Taste Retention Fair to Good
  • Weather Resistance Fair to Good
  • Water Resistance Good to Excellent

Chemical Resistance

  • Acids, Dilute Good
  • Acids, Concentrated Poor to Fair
  • Acids, Organic (Dilute) Good
  • Acids, Organic (Concentrated) Poor
  • Acids, Inorganic Fair to Good
  • Alcohols Fair to Good
  • Aldehydes Fair to Poor
  • Alkalies, Dilute Good
  • Alkalies, Concentrated Poor to Good
  • Amines Poor
  • Animal & Vegetable Oils Good to Excellent
  • Brake Fluids, Non-Petroleum Based Poor
  • Diester Oils Fair to Good
  • Esters, Alkyl Phosphate Poor
  • Esters, Aryl Phosphate Poor to Fair
  • Esters Poor
  • Fuel, Aliphatic Hydrocarbon Good to Excellent
  • Fuel, Aromatic Hydrocarbon Fair to Good
  • Fuel, Extended (Oxygenated) Fair to Good
  • Halogenated Solvents Poor
  • Hydrocarbon, Halogenated Poor to Fair
  • Ketones Poor
  • Lacquer Solvents Fair
  • LP Gases & Fuel Oils Excellent
  • Mineral Oils Excellent
  • Oil Resistance Good to Excellent
  • Petroleum Aromatic Good
  • Petroleum Non-Aromatic Excellent
  • Refrigerant Ammonia Good
  • Refrigerant Halofluorocarbons R-11, R-12, R-13
  • Refrigerant Halofluorocarbons with Oil R-11, R-12
  • Silicone Oil Good
  • Solvent Resistance Good to Excellent

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