SIL ,VMQ

Silicone Rubber ( SIL )
Features:
Abbreviation                                             SILICONE
ASTM D-2000 classification                      FC,FE,GE
General Characteristics
Tensile Strength                                        Poor
Elongation                                                Excellent
Rebound Resistance                                  Limited
Tear Resistance                                         Poor
Abrasion-Resistance                                  Poor
Impact Strength Resistance                        Poor
Gas Impermeability Resistance                  Poor
Ozone Resistance                                      Excellent
Weathering Resistance                               Excellent
Flame Resistance                                      Excellent
Heat Resistance                                         Excellent
Low Temperature Resistance                     Excellent
Oil and Fuel Resistance                             Limited
Animal and Vegetable Oil Resistance         Suitable 
Alcohol Resistance                                    Good
Alkaline Resistance                                   Poor
Acid Resistance                                        Limited
Aliphatic-solvent Resistance
   -Aliphatic                                             Poor
   -Aromatic                                             Poor
Oxygenated-Solvent Resistance                  Limited
Water Resistance                                       Good
Adhesion To Metals                                  Good
Advantage:
1. Being compounded to have tensile in the area of 1500 PSI and tear up to 200 lbs.
2. Low compression set and good resilience.
3. moderate solvent resistance.                   
4. Excellent heat resistance.
5. Good release characteristics.                 
6. Extreme low temperature properties.
7. Highly resistance to oxidation and ozone attack.
Disdvantage:
1. Not recommended for most concentrated solvents, oils, concentrated acids and dilute sodium hydroxide.