Nitrile Rubber

Nitrile Rubber, NBR, is a synthetic rubber that finds a great deal of use in applications that require resistance to petroleum oils and gasoline. It is generally resistant to many hydrocarbons, fats, oils, greases, hydraulic fluids and chemicals. It is generally attacked by keytones, esters, aldehydes, chlorinated and nitro hydrocarbons. Useful applications are carburetor and fuel-pump diaphragms, aircraft hoses and gaskets.

Properties and Characteristics

  • Specific Gravity: 1.00
  • Tensile Strength, psi – Pure Gum: 600
  • Tensile Strength, psi – Reinforced: 3000
  • Practical Shore A Hardness Range: 20–95
  • Resilience, Room Temperature: Fair
  • Resilience, Hot: Fair
  • Tear Resistance: Fair
  • Abrasion Resistance: Excellent
  • Atmosphere Aging Resistance: Fair
  • Oxidation Resistance: Fair
  • Heat Resistance: Good
  • Low Temperature Flexability: Good
  • Compression Set: Good
  • Permeability: Excellent
  • Flame Resistance: Poor
  • Acid Resistance – Dilute: Good
  • Acid Resistance – Concentrated: Fair
  • Moisture Resistance: Excellent
  • Solvent Resistance Hydrocarbons: Good – Excellent
  • Oxygenated Solvents: Poor
  • Oil and Gasoline: Excellent
  • Animal and Vegetable Oils: Excellent
  • Dielectric Properties: Poor

REDCO's Properties of Rubber Chart

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