R 20 - Silicone rubber for molds of medium hardness (catalyzes in 6 hours)

It is the fastest RTV silicone rubber on the market, it hardens in just 6 hours at room temperature.

It has a very high resistance to tearing and is ideal for making soft molds (20 ShoreA hardness).



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It is a bi-component rubber (base + catalyst) that thanks to its low viscosity and high elasticity allows copying faithfully even the smallest details.

Ideal to make molds of any type and size and is particularly suitable for making objects and creations in plaster, resins, wax, soap, and cement.

Thanks to the special catalyst formula we managed to:

  • Reduce the setting (from 12 hours to 6 hours)
  • Eliminate the bad smells typical of the other catalyseurs.
  • Improve technical and mechanical performance (+ 15% of casting compared to all other commercially available condensation silicone rubbers)
  • Improve the aging resistance of the molds

Label elements: CLP Regulation (EC) No 1272/2008:


The product is not classified as hazardous according to CLP Regulation (EC) No 1272/2008

Hazard statements:


Precautionary statements:





Hazard statements:

H317 - May cause an allergic skin reaction
H373 -
May cause damage to organs through prolonged or repeated exposure

Precautionary statements:

P261 - Avoid breathing vapours
P280 -
Wear protective gloves/protective clothing/face protection
P302+P352 - IF ON SKIN: Wash with plenty of water
P314 - Get medical advice/attention if you feel unwell
P333+P313 -
If skin irritation or rash occurs: Get medical advice/attention
P501 - Dispose of contents/container in accordance with regulations on hazardous waste or packaging and packaging waste respectively

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