Premium Condensation Silicone for Professional Molds

Silicone Condensation 20 is a tin-cure silicone rubber with a Shore A 20 hardness, specially developed for creating durable molds for polyester, epoxy, and composite casting. This liquid silicone delivers exceptional detail and combines flexibility with very high tensile strength for long-term use.

Key Benefits

• Excellent fluidity: Captures finest details and textures accurately
• Very high tensile strength: Resistant to intensive use and repeated castings
• Optimal flexibility: Shore A 20 hardness for easy demoulding
• Polyester compatible: No inhibition when used with polyester resins
• Reliable curing: Predictable processing time and consistent results
• Cost-effective: Long life and high yield per mold

Typical Applications

• Molds for polyester and composite parts in the automotive and maritime industries
• Props and set pieces for theatre, film and events
• Sculptures, ornaments and architectural elements in plaster and concrete
• Candle molds and soap molds for artisanal production
• Prototypes and model building for product design
• Precision foundry and art foundry applications

Technical Features

This condensation silicone is supplied as a two-component system, easy to use at room temperature. Its medium hardness (Shore A 20) offers the ideal balance between flexibility and dimensional stability. Suitable for both brush and pouring applications, depending on the complexity of the model.

Note: Pot life (processing time) and demold time depend heavily on the mixing ratio and humidity. Adding more silicone B (hardener) or increasing humidity will shorten the pot life and demold time.

Ironing, Smearing or Spatula

For spreading, spatulating or smoothing silicone you can use Thixo C (0.6%-2%, usually 1%) . This thickener makes the silicone easy to spread. With this processing method, the mold must be provided with aplaster bandage support cap. epoxy support cap, or acrylic resin with thickener and glass fibre.

Manufactured by Silicones and More , specialists in high-quality moulding rubbers and casting materials for professional makers.

Professional Support

Questions about processing time, mixing ratios, or application possibilities? Our technical team is happy to advise you on the right material for your project.