Polyisoprene Rubber

Polyisoprene Rubber, IR, is a synthetic rubber that is the closest of all synthetic rubbers in duplicating many of the physical properties of natural rubber. It is very similar to natural rubber in its chemical resistance. Typical applications are almost interchangeable with those of natural rubber. It is also referred to as synthetic natural rubber!

Properties and Characteristics

  • Specific Gravity: .93
  • Tensile Strength, psi – Reinforced: 3000
  • Practical Shore A Hardness Range: 30–95
  • Resilience, Room Temperature: Excellent
  • Resilience, Hot: Excellent
  • Tear Resistance: Excellent
  • Abrasion Resistance: Excellent
  • Atmosphere Aging Resistance: Poor
  • Oxidation Resistance: Good
  • Heat Resistance: Fair – Good
  • Low Temperature Flexability: Excellent
  • Compression Set: Fair – Good
  • Permeability: Fair
  • Flame Resistance: Poor
  • Acid Resistance – Dilute: Good
  • Acid Resistance – Concentrated: Fair
  • Moisture Resistance: Good – Excellent
  • Solvent Resistance Hydrocarbons: Poor
  • Oxygenated Solvents: Good
  • Oil and Gasoline: Poor
  • Animal and Vegetable Oils: Poor – Good
  • Dielectric Properties: Good – Excellent

REDCO's Properties of Rubber Chart

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