Mouldmaking Silicones

CHT’s high performance mouldmaking silicones are designed to produce high-quality, negative moulds of almost any object, component or figure with very accurate detail reproduction.

Whether it be for industrial design (Rapid Prototyping), architectural applications, large-scale production parts, jewellery, or food moulding, mouldmaking silicone rubbers are flexible but durable even after multiple uses.

These room temperature vulcanising (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 with platinum-based catalyst.

CHT offers a great selection of products for mouldmaking purposes. However, finding the suited silicone for your application is not limited to our product portfolio.

Our technical team will partner with you to either modify specifications in a current product or custom formulate a new one to meet your exact requirements.


CHT’s mouldmaking silicones impress with the following physical properties:

  • Wide range of durometers / hardnesses
  • Wide range of viscosities
  • Compatibility with silicone fluids to increase softness
  • Flexibility with mixing ratios of the base and catalyst
  • Good self-releasing characteristics
  • Low and high tear strengths available
  • Low shrinkage
  • Excellent dimensional stability
  • Chemical resistance
  • Fine detail replication


CHT's Silicone Experts are able to modify multiple product characteristics to meet your desired process requirements and final properties - including:

  • Viscosity, Durometer, Hardness
  • Translucent grades for pigmentation
  • Work Life/Pot life
  • Rheology
  • Surface feel


Contact and challenge us.

Addition Cure Silicones

Addition curing systems are 2-part liquid silicones. They utilise a platinum catalyst to cure by either room temperature vulcanisation (RTV) or heat to accelerate cure.

Typical attributes:

  • High tear and tensile strength
  • Very low shrinkage
  • Fine detail reproduction
  • Extensive range of hardnesses
  • Choice of catalysts and thixotroping agents


Condensation Cure Silicones

Condensation cure silicones are either 1-part or 2-part systems that utilise a tin based catalyst to cure.

Typical attributes:

  • Wide range of tear strengths
  • Good extended mould life
  • Fine detail reproduction
  • Extensive range of hardnesses
  • Choice of catalyst and thixotroping agent


Food Grade

Addition cure moulding rubbers have been formulated to meet FDA and EU tests for use with aqueous and fatty Foods.

Common applications:

  • Icing sugar moulding for cake decoration and confectionary
  • Chocolate moulding for confectionary



Rapid Prototyping

Rapid prototyping methods often use silicone moulds to reproduce a limited number of prototype components from resin masters.
This process enables rapid, low cost and uncomplicated production of prototypes and models.

The detailed reproduction supports further product development.

Typical Attributes:

  • Fine detail reproduction
  • High dimensional stability
  • Easy Self-releasing
  • High transparency
  • Very good resistance to chemicals



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