Silicone Moulding Rubber

Silicone moulding rubbers are easy to use and exceptional in their ability to reproduce fine detail. They can be used for casting a very wide range of materials, including confectionary, plaster, concrete, polyester and polyurethane resins.

RTV silicone rubbers use two different types of silicone chemistry to form an elastomer: condensation cure systems which use a tin based catalyst and addition cure systems which use platinum based catalyst.  Although the end products can be very similar they do have some key differences which should always be considered when making your product selection.

Key differences:       

Addition Cure          

  • Low shrinkage, below 0.1%
  • Marginally higher tensile strength
  • Slightly tougher rubber
  • Need for careful and accurate mixing
  • Good abrasion resistance
  • Cure can be accelerated using heat 
  • Tolerant to the addition of silicone fluid as a softener

Condensation Cure  

  • Lower costs
  • Broader product range
  • Less sensitive to exact mix ratio
  • Easy to use thixotroping agent available
  • Accelerator catalysts available to speed up cure
  •  Blending of grades possible to achieve desired hardness   

ICM Silicones manufacture a wide rande of moulding products including food approved materials.

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Europe, Middle East ACC Silicones
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China Amber Silicones
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USA Quantum Silicones
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