Home Addition Cure Silicone Putty Condensation Cure

Elastosil M 4470                                                 



Elastosil M 4470 is a 60 duro RTV-2 silicone rubber.  This condensation-curing silicone vulcanizes at room temperature with the addition of either of two catalysts.


  •  cures to nominal 60 duro Shore A hardness
  •  good flow and self-deaeration
  •  very good heat resistance
  •   high thermal conductivity

Basic Typical Physical Properties

RubberWorks RTV Data Sheet

Elastosil M 4470

Property Test Procedure Value
Appearance   Reddish Brown
Density, 23 C, g/cm3 DIN 52 479 A 1.45
Viscosity, 23 C, cPs Brookfield 20,000
Cured with 3 wt% Catalyst T37 - 4 days at 23 C in 50% Relative Humidity
Hardness, Shore A DIN 53 505, ISO 867 60
Tensile Strength, psi DIN 53 504 S3, ISO 37 650
Elongation at Break, % DIN 53 504 S3, ISO 37 120
Tear Resistance, ppi ASTM D624, B > 23
Linear Shrinkage, %   0.8
Viscosity, 23 C, cPs Brookfield 10,000

Typical Values shown are not intended for use in the preparation of specifications

Elastosil M 4470 is available in 25 kg Pail Kits

M 4470 can be supplied with Catalyst T37 (Long pot life and cure time) or Catalyst T40 (Short pot life and cure time)

        Call RubberWorks for the detailed Wacker Elastosil Data Sheet


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Last modified: December 28, 2010

Elastosil, Semicosil, and Powersil are registered trademarks of Wacker Chemical.