RTV Silicone Moulding Rubber 2.06kg kit


2kg Silicone + 60g Catalyst

 Total Volume 1.9 Litres

The cure time can be adjusted by varying the amount of catalyst
A ratio 0f 4% catalyst (4g catalyst per 100g rubber) = Pot life 4-6 minutes - Cure time 1.5 hours
A ratio 0f 3% catalyst (3g catalyst per 100g rubber) = Pot life 15-20 minutes - Cure time 3hours
A ratio 0f 2% catalyst (2g catalyst per 100g rubber) = Pot life 25-30 minutes - Cure time 7 hours

*Supplied with 3% worth of catalyst*

This product has been formulated to be of the highest quality. The two components mix easily by hand and because of the low viscosity can be used without processing in a vacuum chamber. The cured rubber is a flexible, elastic material with exceptional tensional and tear strength. There is almost no shrinkage (0.2%) and excellent reproduction of fine detail. It has a long mould life with outstanding release properties, there is no risk of the casting material sticking to the mould. This rubber is suitable for casting a wide range of materials please see below for more details.

We have focused on minimizing the potential health risks to the user by formulating a non-toxic, non-flammable and virtually odourless catalyst unlike the majority of other condensation cure silicones which use hazardous and toxic catalysts.

The kit comprises of a white base rubber and a purple catalyst which provides a visual aid to ensure that the material is thoroughly mixed. A clear catalyst is available through the drop down menu.
This silicone is suited for the detailed reproduction of figures, art objects, soaps, candles and similar items.
  • Can be pigmented to a wide range of colours 
  • Can be softened to your own requirements using this softening additive  
  • Can be made thixotropic for applying to vertical surfaces or to over head objects 

Physical Properties Medium Version Soft Version
Viscosity mPas 18,000 11,000
Tensile Strength Mpa 4.5 4
Elongation 420% 500%
Tear Strength kN/m 28 25
0.2% 0.2%



  • Polyurethane resin
  • Epoxy resin
  • Polyester resin
  • Acrylic resin
  • Plastisol/PVC
  • Plaster
  • Cement  
  • Polymer Clays
  • Waxes

Not suitable for use with food , on human skin or for casting hot metals. Please view my other products which are suitable for these applications.

All prices include VAT unless otherwise stated.

DWR Plastics - Silicone Moulding Kits, Rubbers & Resins