RTV Food & Skin Safe Silicone Mould Making Rubber 1kg kit


500g PART A + 500g PART B

Volume 925ml 

This rubber is safe for repeated contact with food and has been independently tested to
verify compliance with the United States Food & Drug Adminestration regulation US FDA 21 CFR 177.2600. The certificate is available to view as a PDF file please

The two odourless and non-toxic components mix easily by hand with a simple mixing ratio of 1:1 and because of the low viscosity can be used without processing in a vacuum chamber. The cured rubber is a translucent beige colour that is a flexible, elastic material with high tensional and tear strength. There is almost no shrinkage (0.1%) 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. Being an addition/platinum cure rubber it has excellent dimensional stability and will resist deforming providing a long library life. This rubber is suitable for casting a wide range of materials including for use with confectionery, speciality foods and is safe for contact with skin for life castings. Please see below for more details.

 Mixing Ratio: 1 : 1 -  Pot Life: 8-12 Minutes  -  Cure Time: 1-2 Hours

  • 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 
  Soft Version   Medium Version
Hardness Shore A 15 28
Viscosity mPas 5,000 8,000
Tensile Strength Mpa 5.5 6.5
Elongation 500% 500%
Tear Strength kN/m 20 24
0.1% 0.1%


  • Food & Confectionary 
  • Contact with human skin
  • Metals with a melting temperature below 200°C
  • Polyurethane resin
  • Epoxy resin
  • Polyester resin
  • Acrylic resin
  • Plastisol/PVC
  • Plaster
  • Cement  
  • Polymer Clays
  • Waxes

    Inhibition Of Cure

    Great care must be taken when handling and mixing all addition-cured silicone elastomer systems. All the mixing tools (vessels and spatulas) should be clean and constructed in materials which do not interfere with the curing mechanism. The cure of the rubber can be inhibited by the presence of compounds of nitrogen, sulphur, phosphorus and arsenic; organotin catalysts and PVC stabilisers; epoxy resin catalysts and even contact with materials containing these substances e.g. moulding clays, sulphur vulcanised rubbers, condensation cure silicone rubbers, onion and garlic.

All prices include VAT unless otherwise stated.

DWR Plastics - Silicone Moulding Kits, Rubbers & Resins