VMQ, PMQ, or PVMQ Silicone Rubber

  • Abbreviation: VMQ, PMQ, PVMQ
  • ASTM D-2000 Classification: FC, FE, GE
  • Chemical Definition: Polydimethylsiloxane

Physical & Mechanical Properties

  • Durometer or Hardness Range: 20 – 90 Shore A
  • Tensile Strength Range: 200 – 1,500 PSI
  • Elongation (Range %): 100% – 900%
  • Abrasion Resistance: Poor to Good
  • Adhesion to Metal: Good
  • Adhesion to Rigid Materials: Good
  • Compression Set: Good to Excellent
  • Flex Cracking Resistance: Poor to Good
  • Impact Resistance: Poor to Good
  • Resilience / Rebound: Good to Excellent
  • Tear Resistance: Poor to Good
  • Vibration Dampening: Fair to Good

Chemical Resistance

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

Thermal Properties

  • Low Temperature Range: -178º F to -90º F
  • Minimum for Continuous Use (Static): -170º F
  • Brittle Point: -178º F to -60º F
  • High Temperature Range: +400º F to +550º F
  • Maximum for Continuous Use (Static): +550º F

Environmental Performance

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

For assistance in identifying the appropriate polymer or material, or to develop and formulate a silicone rubber compound to meet your specific application and performance requirements, please contact Rahco Rubber, Inc. at sales@rahco-rubber.com or 847-298-4200.

Rahco Rubber, Inc. makes no expressed or implied warranty as to any qualities, attributes, or characteristics of any polymer or material. This information is provided for reference only.