Pourable, addition-curing RTV-2 silicone rubber that cures at room temperature.


Main application: Making shrink-free molds with excellent reproduction accuracy.



  • Low viscosity
  • Low hardness (Shore A 20)
  • Easy to meter and mix due to 1:1 ratio
  • Short curing time at room temperature
  • Translucent
  • Non shrink cure
  • Easy demolding

Specific features of ELASTOSIL® M 4119 A/B

  • Addition Curing
  • Fast curing at room temperature
  • Flowable
  • Low viscosity
  • No chemical shrinkage
  • Two-component

As a low-Shore addition-curing RTV-2 silicone rubber that cures without undergoing dimensional shrinkage, ELASTOSIL® M 4119 is extremely suitable for casting all common reproduction materials, particularly if accurate copies of models with pronounced undercuts are required. Perfect mold making material for very fast de-moldings!

Mix components A and B in a ratio of 1 : 1.

Important note:
The platinum catalyst is contained in component A.

A and B components may only be used together if they have the same batch number.

Please check also our brochures and info sheets



The "Best use before end" dat 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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