Extremely soft silicone casting rubber - casting silicone

Silicone soft Rosso ZA 4 A+B 2 KG


In stock

Is a red coloured 2 component extremely soft, elastic, self-demoulding RTV rubber material based on silicone that reacts after the addition of the polyaddition hardener. This rubber has a high tear resistance and has a skin feel.

Available in 1+1 kg packaging.



For the manufacture of form pieces such as dolls and masks.
Is very thin liquid and can be poured easily. Low shrinkage. Ideal for body castings. By adding silicone oil (5-15%) you can make the result even softer.


  • Always ensure a dry and grease-free surface.
  • Mix both components in a 1:1 weight ratio and brush out a first coat. 
  • This ensures a finer reproduction of all details. 
  • Then pour the mixed rubber over the object. 
  • Potlife: approx. 10-13 min. at 23°C. Drying time: 90 min. 
  • Has an elongation of 500%. 
  • Tear resistance: 7 N/mm. 
  • If you have doubts about the substrate, you should use release agent Trennspray. 
  • Be careful with plasticine based on phosphor and sulphur.
Always provide appropriate protective clothing and gloves. Cleaner for tools: Cleaner M (environmentally friendly substitute for acetone).

Technical specifications

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