VMQ Rubber Material | Vinyl Methyl Silicone | Seal & Design

VMQ Silicone       ASTM D 2000 / SAE J200 Type / Class: FC, FE, GE

General Characteristics

The term silicone covers a large group of materials in which vinyl-methyl-silicone (VMQ) is often the central ingredient. Silicone elastomers as a group have relatively low tensile strength, poor tear and wear resistance. However, they have many useful properties as well. Silicones have good heat resistance and good cold flexibility. They also have good ozone and weather resistance as well as good insulating and physiologically neutral properties.

Temperature Properties

Heat Heat Resistance Up to approximately 400°F (204°C).
Special compounds up to 450°F (232°C).
Cold Cold Flexibility Down to approximately –75°F (–59°C).
Special compounds down to –175°F (–115°C).


Chemical Resistance Chemical Resistance
  • Engine and transmission oil (e.g. ASTM oil No.1)
  • Animal and vegetable oil and grease
  • Brake fluid (non-petroleum base)
  • Fire-resistant hydraulic fluid, HFD-R and HFD-S
  • High molecular weight chlorinated aromatic hydrocarbons (including flame-resistant insulators, and coolant for transformers)
  • Moderate water resistance
  • Diluted salt solutions
  • Ozone, aging, and weather resistant
Not compatible NOT compatible
  • Superheated water / steam over 250°F(121°C)
  • Acids and alkalis
  • Low molecular weight chlorinated hydrocarbons (trichloroethylene)
  • Aromatic mineral oil
  • Hydrocarbon based fuels
  • Aromatic hydrocarbons (benzene, toluene)

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