$ELASTOSIL<sup>®</sup> M 4630 A/B

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


Main application: Making molds for concrete casting.


Food contact (FDA/ BfR compliant)


Available colors
  • White


  •  very good flow
  •  fast and non-shrink cure at room temperature which can be accelerated considerably by the application of heat
  •  low Shore A hardness (approx. 28)
  •  high tear strength
  •  excellent long-term stability of the mechanical properties of the vulcanizate
  •  outstanding resistance to concrete

Specific features of ELASTOSIL® M 4630 A/B

  • Addition Curing
  • BfR compliant
  • Excellent mechanical properties
  • FDA compliant
  • Flowable
  • Food-contact
  • Low viscosity
  • No chemical shrinkage
  • Resistance against casting resins
  • Resistance against concrete
  • Two-component

Data sheets

Due to its outstanding resistance to concrete and superior mechanical properties, ELASTOSIL® M 4630 A/B is ideal for use in molds for making concrete reproductions of models with deep undercuts.

As a low-shore, addition-curing RTV-2 silicone rubber, which cures without dimensional shrinkage, ELASTOSIL® M 4630 A/B is also extremely suitable for casting all other common reproduction materials, especially casting resins where absolutely accurate copies of models with pronounced undercuts are required.

The platinum catalyst is contained in component B.

Only components A and B with the same lot number may be processed together!

 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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