$ELASTOSIL<sup>®</sup> M 4400

Pourable, condensation-curing, two-component silicone rubber that vulcanizes at room temperature.


Main application: Making cost effective molds, especially suited for PE resin, wax or plaster castings.


  • Good flowability and self-deaeration
  • Low Shore A hardness (approx. 23)
  • Great extensibility and elasticity
  • Very good resistance to casting resins, particularly polyester

Specific features of ELASTOSIL® M 4400

  • Condensation-curing
  • Flowable
  • Two-component

Due to its good flow characteristics and its low modulus, ELASTOSIL® M 4400 is particularly suitable as a mold-making material for reproducing intricate structures, even if minor undercuts are involved.

The good resistance to casting resins, especially polyester resins, enables large numbers of castings to be taken from one mold. Other materials, such as plaster or wax, may also be cast without any problems from molds made of ELASTOSIL® M 4400.

Due to the low hardness of the cured rubber and its excellent ink transfer performance, ELASTOSIL® M 4400 is also highly suitable as a starting material for the production of printing pads.

ELASTOSIL® M 4400 is cured by adding Catalyst T37 for long pot lives and curing times, or Catalyst T40 for short pot lives and curing times.

The pot life is the period of time at 23 °C / 50 % rel. humidity during which the catalyzed mix to attain a viscosity of 100,000 mPas and still be just pourable


Please check also our brochures and info sheets.


The 'Best use before end' date of each batch is shown on the product label.

Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.

Sales and support

Wacker Chemical Corporation
3301 Sutton Road
Adrian, MI 49221-9397
United States
+1  888  922-5374 (Phone)

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