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High durometer, medium tear resistance silicone moldmaking rubber for prototyping, architectural and furniture component applications.



SILASTIC™ RTV-4136-M Silicone Rubber is suited for the reproduction of prototyping, architectural and furniture components, especially for use with polyurethanes and other casting plastics.



  • Outstanding release properties
  • Cures at room temperature within 16 hours or heat curable
  • If required the product cure can be heat accelerated
  • High hardness
  • Medium tear resistance
  • Very low shrinkage and good dimensional stability
  • Can be used for high temperature casting applications
  • High inhibition resistance
  • Formulated to work with both rigid and foam polyurethanes

SILASTIC™ RTV-4136-M Curing Agent


    Part Number Size
    4107122 0.4 kg
    4107128, unpigmented 20.4 kg
    4107133 20.4 kg
    4107134 2 kg
    4107147, unpigmented 2 kg



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