Silicone Condensation 20 Universal Set – Molding rubber for universal molds
Silicone Condensation 20 Universal Set – Molding rubber for universal molds
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Ordered and paid on a working day: usually ships the same day
Delivery to Netherlands: usually within 1 working day
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Premium Condensation Silicone for Professional Mold Making
Silicone Condensation 20 is a tin-cure silicone rubber with a Shore A 20 hardness, specially developed for creating flexible, detailed molds. This medium-hard condensation silicone combines excellent flow properties with high tensile strength, making it ideal for both simple and complex molding applications. Its reliable cure and durable flexibility make this silicone the preferred choice for professionals in plaster, concrete, and wax casting.
Key Benefits
- Excellent detail reproduction: Low viscosity ensures perfect reproduction of fine details and textures
- High Tensile Strength: Durable molds that withstand heavy use and repeated pouring
- Dimensionally stable flexibility: Shore A 20 hardness offers optimal balance between flexibility and dimensional stability
- Wide range of applications: Compatible with plaster, concrete, wax, soap and acrylic resin systems
- Reliable curing: Predictable processing time and consistent results at room temperature
- Cost-effective: Excellent price-performance ratio for professional and semi-professional applications
Typical Applications
- Plaster molds: Ornaments, architectural details and decorative elements in plaster and porcelain plaster
- Concrete casting: Precast concrete parts, garden ornaments and wetcast applications
- Candle and soap molds: Flexible molds for complex shapes and undercuts
- Acrylic Resin Casting: Molds for Jesmonite, Acrylic One, and Similar Water-Based Resin Systems
- Props and set construction: Reproductions for theatre, film and events
- Art Foundry: Lost-wax models and prototype development
Technical Features
This condensation silicone is supplied as a two-component system with a simple 100:5 mixing ratio (base:catalyst). The pot life is approximately 30-45 minutes at 23°C, with full cure after 24 hours. The cured rubber exhibits minimal shrinkage and retains its flexibility over a wide temperature range. Suitable for open-mold casting and brush-on applications with thickener.
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.
SAM (Silicones and More) develops and supplies high-quality silicone elastomers and molding materials for professional makers, artists, and industrial applications.
Professional Support
Questions about processing time, mixing ratios, or material selection for your specific application? Our technical team is happy to advise you on the optimal silicone system and the right processing techniques for your project.
Product Properties
- Hardness24Shore AHardness of the silicone material
- ColorWhiteColor of the finished product
- Viscosity24000mPa·sViscosity of the uncured silicone
- Density1.08g/cm³Density of the cured material
- Mix ratio100:5Mixing ratio A : B
- Tensile strength3.92MPaMaximum tensile force before breaking
- Tear strength26.0kN/mResistance against tearing
- Elongation at break400%Maximum stretch before breaking
- Pot life35minutesWorking time after mixing
- Cure time1080minutesTime until full cure
Component Properties
- Color AWhite Color of component A
- Color BColorlessColor of component B
- Viscosity B24000mPa·sViscosity of component B
- Density A1.08g/cm³Density of component A
Thermal Properties
- Max. temperature240°CMaximum service temperature
- Min. temperature-20°CMinimum service temperature
Certification & Safety
- Chemical resistancenoResistance to chemicals
Application
- Use caseMaking mouldsIntended use
- Silicone type["Condensation curing"]Type of silicone or polymer
Safety Information
Wear splash goggles, suitable liquid-tight gloves, an apron and work in a well ventilated area.| Safety Pictograms | Safety Data Sheets (SDS) |
|---|---|
GHS hazard pictograms
  
Required protection (ISO 7010)
     |
| Signal Word | H‑code | Hazard Statement | P‑codes | P‑statements |
|---|---|---|---|---|
| Danger | H225 | Highly flammable liquid and vapour | P210 P233 P240 P241 P280 P303+P361+P353 P370+P378 |
|
| Warning | H315 | Causes skin irritation | P264 P280 P302+P352 P333+P313 |
|
| Warning | H317 | May cause an allergic skin reaction | P261 P272 P280 P302+P352 P333+P313 P362+P364 |
|
| Danger | H318 | Causes serious eye damage | P280 P305+P351+P338 P310 |
|
| Warning | H335 | May cause respiratory irritation | P261 P271 |
|
| Warning | H336 | May cause drowsiness or dizziness | P261 P271 P312 |
|
Manuals
- Instructions: Making a Silicone Mold of a Candle (for soap or candles) View manual
- Manual: Making a silicone mold of an ornament or decorative concrete View manual
- Guide: copying a wooden ornament View manual
- Guide: making a one-part pour or trowel mould (stone strip) View manual
- Making a brush on silicone mould View manual
Technical data sheets
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YouTube
Frequently asked questions
What is the delivery time for my order?
Orders placed and paid on working days are in most cases shipped the same day. Weekend orders are processed on the next working day.
Indicative delivery times: Netherlands usually within 1 working day, Belgium and Germany typically 1–2 working days, other countries depending on destination and carrier. These are guidelines, not guarantees: peak periods, public holidays or carrier delays can have an effect.
What is the return policy?
You have 30 days to return after receipt. Email info@siliconesandmore.com within 30 days of delivery with your name and order number. The full conditions are in our return policy.
How can I track my order?
As soon as your order has shipped, you'll receive a track & trace code by email. It can take up to 24 hours before the code is active.
I have a problem with my order – how do I reach you?
Contact us via our contact page or email info@siliconesandmore.com. We're happy to help you quickly.
Can I order as a business?
Yes. Apply for a business account; we review your application within 3 working days. After that you order while logged in and pay on invoice, with payment terms of 14 days after delivery.
EU businesses outside the Netherlands with a valid VAT number order with VAT reverse-charged (0%, intra-community supply). The VAT number is stored in your business account; it cannot be added to an order after it has been placed.