The data included in the Comparative Properties of Synthetic Elastomers is intended to be a guide for selecting the best base polymer for a specific environment. These properties can be affected based on the formulation and mixing method. Since the discovery of vulcanization, great strides have been made in elastomer technology. The most noticeable advancement is in the new and better polymers.

  Properties   Epichlorohydrin Fluorosilicone Butyl Isobutylene Isoprene Nitrile
(Buna N) Butadiene Acrylonitrile
Silicone Polysiloxane Polymer Neoprene Chloroprene Fluoroelastomer Co-polymer of Vinylidene Fluoride and Hexafluoro-propylene Ethylene Propylene Hydrocarbon
  Tensile Strength (PSI) (1000 psi = 6.9 MPa) Pure Gum Over 2000 Below 1500 Over 1500 Below 1000 Below 1500 Over 3000 Over 2000 Over 2000
Black Loaded Stocks Over 2000 Over 2000 Over 2000 Over 3000 Over 2000 Over 3000
  Hardness Range (Shore Duro A) 50-95 40-85 40-75 40-95 20-85 40-95 60-95 40-90
  Specific Gravity (Base Material) 1.27-1.36 1.4-1.5 0.92 1.00 1.1 to 1.3 1.23 1.85 0.85
  Vulcanizing Properties Good Excellent Good Excellent Excellent Excellent Good Excellent
  Adhesion to Metals Good Fair Good Excellent Good Excellent Good to Excellent Fair
  Adhesion to Fabrics Good Fair Good Good Good Excellent Good to Excellent Good
  Tear Resistance   Fair Poor Good Fair Poor Good Fair Very Good
  Abrasion Resistance Fair Poor Good Good Poor Excellent Good Very Good
  Compression Set   Fair Fair Fair Good Fair Fair to Good Very Good Very Good
  Rebound Cold Fair Excellent Bad Good Excellent Very Good Good Fair
  Hot Fair Excellent Very Good Good Excellent Very Good Excellent Good
  Dielectric Strength   Fair Good Excellent Poor Good Good Good Excellent
  Electrical Insulation   Fair Good Good to Excellent Poor Excellent Fair to Good Fair to Good Excellent
  Permeability to Gases   Excellent Fair Very Low Fair Fair Low Very Low Low
  Acid Resistance Dilute Good Excellent Excellent Good Excellent Excellent Excellent Very Good
  Concentrated Good Fair Excellent Good Fair Good Excellent Very Good
  Solvent Resistance Aliphatic Hydrocarbons Excellent Good Poor Excellent Poor Good Excellent Poor
  Aromatic Hydrocarbons Excellent Very Good Poor Good Poor Fair Excellent Poor
  Oxygenated (Ketones, etc.) Poor Poor Good Poor Fair Poor Poor Very Good
  Lacquer Solvents Poor Fair Poor Fair Poor Poor Poor Very Good
  Resistance to: Swelling in Lubricating Oil Good Good Poor Very Good Fair Good Excellent Poor
  Oil and Gasoline Poor Excellent Poor Excellent Fair Good Excellent Poor
  Animal and Vegetable Oils Excellent Excellent Excellent Excellent Fair Good Excellent Good
  Water Absorption Fair to Good Excellent Very Good Fair to Good Good Good Very Good Good to Excellent
  Oxidation Good Excellent Excellent Good Excellent Excellent Outstanding Excellent
  Ozone Excellent Excellent Excellent Fair Excellent Excellent Outstanding Excellent
  Sunlight Aging Good Excellent Very Good Poor Excellent Very Good Very Good Excellent
  Heat Aging Excellent Very Good Excellent Excellent Outstanding Excellent Outstanding Excellent
  Flame Good Fair Poor Poor Fair Good Good Poor
  Heat Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent
  Cold Excellent Excellent Good Good Excellent Good Good Excellent