Silicone Casting Rubber - Your Complete Guide to Professional Silicones

Welcome to Siliconesandmore's ultimate silicone casting rubber collection. Whether you want to make silicone molds, need industrial silicones, or are looking for food-safe silicones - we have the perfect solution for every application.

Platinum Silicones vs Tin Silicones - The Difference Explained

Tin Silicones (Condensation Silicones) - Affordable & User-Friendly

Tin silicones, also known as condensation silicones, are the most popular choice for beginners and hobbyists. This silicone casting rubber forms rubber by condensation, exuding a small amount of material.

Advantages of tin silicones:

• ✓ Cheaper than platinum silicones
• ✓ Easy to process
• ✓ Ideal for soap molds, candle molds, and concrete molds
• ✓ Long working time

Disadvantages of tin silicones:

• × Minimal shrinkage (±1% per year)
• × Not food-safe
• × B-component is less healthy

Platinum Silicones (Addition Silicones) - Premium Quality

Platinum silicones or addition silicones are the professional choice for high-quality applications. This silicone casting rubber exhibits virtually no shrinkage and offers superior performance.

Advantages of platinum silicones:

• ✓ No shrinkage
• ✓ Food-safe silicones available
• ✓ Longer lifespan
• ✓ Suitable for aggressive resins
• ✓ Skin-friendly

Disadvantages of platinum silicones:

• × More expensive than tin silicones
• × Can react with certain materials (sulfur, nitrogen)

Silicone Categories - For Every Application

🏭 Industrial Silicones

Professional silicone casting rubber for industrial applications, prototyping, and production molds. Resistant to extreme temperatures and chemicals.

🍰 Culinary Silicones

Food-safe silicones for making chocolate molds, baking pans, and culinary creations. FDA-approved and TÜV-certified.

🎭 Special FX & Cosplay Silicones

Soft, skin-friendly silicone casting rubber for masks, prosthetics, and special effects. Perfect for film, theater, and cosplay.

🏗️ Construction & Building Silicones

Strong silicone molds for concrete, plaster, and other building materials. Ideal for pre-fabricated elements and architectural details.

🕯️ Hobby & Creative Silicones

User-friendly silicone casting rubber for soap, candles, resin, and other creative projects.

Complete Product Overview - All Silicones at a Glance

💎 Premium Platinum Silicones (Addition)

🔹 Very Soft Silicones (Shore A 0-10)

• Silicone Addition Gel 840 Clear - Transparent silicone gel specially developed for potting electronic components. Remains flexible after curing and protects against moisture while keeping measuring pins accessible. Pot life 80 minutes, cure time 24 hours.
• Silicone Soft Flex 00-35 - Extremely soft and stretchable silicone ideal for realistic masks, robotics, and dolls. Shore A 00-35 hardness ensures natural movement and flexibility. Fast processing with 6-8 minutes pot life and 16-18 minutes cure time.
• Silicone Addition Clear 0 Super Soft - Crystal clear, very soft silicone perfect for optical applications and electronics potting. Combination of transparency and softness makes it ideal for delicate projects. Pot life 50 minutes.
• Silicone Wound - Professional SFX silicone for creating realistic wounds and skin effects. Very soft, skin-friendly, and easy to apply. Popular in film, theater, and cosplay. Fast cure in 8-10 minutes.
• Silicone Addition Clear 5 - Very soft, crystal clear silicone for optical elements and electronics. Shore A 5 hardness offers a perfect balance between softness and stability. Ideal for LED potting and light guiding. Pot life 30 minutes.
• Silicone Addition Colorless 5 - Very soft, stretchable silicone perfect for delicate molds and masks. Excellent detail reproduction and flexibility make it ideal for fine shaping. Suitable for fragile objects and detailed candle molds.

🔹 Soft Silicones (Shore A 10-25)

• Silicone Addition Pink 10 - Soft, flexible pink silicone ideal for fragile objects and candles. Resistant to aggressive resins such as epoxy and polyurethane. Shore A 10 hardness offers perfect flexibility for delicate molds. Pot life 40 minutes.
• Silicone Addition Transparent 15 Normal - Skin-friendly and food-safe silicone for medical applications, prototyping, and stamps. Transparent version with Shore A 15 hardness. Ideal for prosthetics, podiatry, and pad printing industry. Pot life 60 minutes.
• Silicone Addition Transparent 15 Fast - Fast version of Transparent 15 with identical properties but accelerated curing. Perfect for time-critical projects where skin-friendliness and food safety are required. Pot life only 2 minutes.
• Silicone Culinary® - Specially developed food-safe silicone for culinary molds. TÜV-certified and FDA-approved for direct food contact. Ideal for chocolate, fondant, ice cream, and other foodstuffs. Developed for professional catering.
• Silicone Addition Clear 25 - Crystal clear silicone with medium hardness for optical applications. Perfect for LED potting, water imitation, and windows in model building. Shore A 25 offers good stability while maintaining transparency. Pot life 120 minutes.
• Silicone Addition Clear 25 Fast - Fast version of Clear 25 with identical optical properties. Ideal for projects where quick turnaround is required without compromising clarity. Pot life 30 minutes, cure time 4 hours.
• Silicone Addition Yellow 25 - Yellow silicone with excellent chemical resistance to aggressive casting resins. Specially formulated for epoxy, polyurethane, and polyester applications. Shore A 25 hardness ensures durable molds. Pot life 60 minutes.
• Silicone Addition Colorless 25 - Versatile silicone with medium hardness for general applications. Good balance between flexibility and firmness makes it suitable for various projects. Neutral color suits any application. Shore A 25 hardness.

🔹 Hard Silicones (Shore A 30-50)

• Silicone Addition Green 30 - Relatively hard green silicone for sturdy, durable molds. Excellent resistance to aggressive casting resins such as epoxy, polyurethane, and polyester. Shore A 30 hardness ensures dimensional stability for repeated use. Pot life 60 minutes.
• Silicone Addition Transparent 40 Normal - Hard, strong transparent silicone for demanding applications. Ideal for prototyping, pad printing stamps, prosthetics, and podiatry. Shore A 40 hardness offers maximum durability. Skin-friendly and biocompatible.
• Silicone Addition Transparent 40 Fast - Fast version of Transparent 40 with identical mechanical properties. Perfect for production environments where quick turnaround is crucial. Retains all benefits of skin-friendliness and strength. Pot life 2 minutes.
• Silicone Addition Colorless 50 - Hard but flexible silicone specially developed for heavy casting materials like concrete. Shore A 50 hardness offers an optimal balance between firmness and flexibility. Ideal for architectural elements and construction applications.
• Silicone Elastosil M 4601 A/B - Professional industrial silicone with excellent resistance to aggressive casting resins, especially polyurethane. Medium hard silicone for sturdy, dry molds. Temperature resistant for a short time. Pot life 90 minutes.

🔹 Special Platinum Silicones

• Plastique Culinary® Fast - Kneadable food-safe silicone for quick culinary applications. Unique kneadable consistency allows for manual shaping. FDA-approved for direct food contact. Pot life 100 seconds, cure time 10 minutes.
• Elastosil RT 620 - Premium FDA-approved silicone for medical and pharmaceutical applications. Biocompatible and suitable for prolonged skin contact. Used in medical devices and implants. Highest quality standards.
• Silicone Addition SkinForm - Specialized silicone for skin applications and prosthetics. Developed for natural feel and appearance. Skin color and texture imitate real skin. Popular in medical and cosmetic applications.

🔹 Polytek PlatSil Gel Series - Professional Gels for Molds & Life Casting

The Polytek PlatSil Gel series are platinum-cure silicone gels used worldwide for mold making, life casting, prosthetics, and SFX. They combine excellent detail reproduction with a wide hardness range from extremely soft to medium.

• PlatSil Gel-OO - Extremely soft platinum-cure gel (Shore 00) for prosthetics and soft skin layers. Maximum suppleness and natural feel. Ideal for life casting and SFX effects.
• PlatSil Gel-0020 - Ultra-soft platinum silicone (Shore 00-20) for prosthetics and realistic skin layers. Excellent stretch and resilience for moving parts.
• PlatSil Gel-0030 - Ultra-soft platinum silicone (Shore 00-30) for SFX moulage and prosthetics. Slightly firmer than Gel-0020, suitable for flexible organ walls and skin layers.
• PlatSil Gel-10 - Versatile platinum-cure gel (Shore A 10) for mold making and life casting. Good balance between softness and firmness for detailed molds.
• PlatSil Gel-25 - Firmer platinum-cure gel (Shore A 25) for mold making and prototyping. Excellent dimensional stability for repeated use in production environments.

🔹 Polytek PlatSil FS Series - Fast-Setting Silicones for Rapid Production

The PlatSil FS (Fast-Setting) series is specially developed for applications where quick turnaround times are required, without compromising quality or detail reproduction.

• PlatSil FS-00 - Fast-setting ultra-soft silicone (Shore 00) for mold making and SFX. Combines the softness of the Gel-OO series with accelerated curing for higher productivity.
• PlatSil FS-10 - Fast-setting platinum-cure silicone (Shore A 10) for mold making and rapid prototyping. Ideal for production environments where fast demolding and short cycle times are desired.
• PlatSil FS-20 - Fast platinum-cure silicone (Shore A 20) for mold making and prototypes. Versatile mid-range in the FS series, suitable for a wide range of applications with short turnaround times.

🥈 Affordable Tin Silicones (Condensation)

🔹 Universal Tin Silicones

• Silicone Condensation 20 Universal - Most popular condensation silicone for general applications. Ideal for soap molds, candle molds, and concrete molds. Shore A 20 hardness offers a perfect balance between flexibility and firmness. Pot life 100-120 minutes.
• Silicone Condensation 20 Starter Kit - Complete kit for beginners with everything needed to start making silicone molds. Contains basic silicone, hardener, instructions, and accessories. Perfect introduction to the world of silicone casting.
• Silicone Condensation 20 for PU and Epoxy - Specially formulated condensation silicone resistant to aggressive resins. Optimal performance when used with polyurethane and epoxy casting resins. Reduced reaction with aggressive chemicals. Shore A 20 hardness.
• Silicone Condensation 20 for Polyester - Optimized formulation for polyester casting resin applications. Minimal inhibition and excellent mold release for polyester projects. Proven performance in fiberglass and polyester industry. Medium Shore A 20 hardness.

🔹 Professional Tin Silicones

• Silicone Condensation DC 3481 Fast - Professional fast condensation silicone from Dow Corning. Very dry finish and fast usability make it ideal for commercial production. Suitable for concrete, wax, and soap. Pot life 30 minutes, cure time 6 hours.
• Silicone Condensation DC 3481 R - Premium professional silicone with very dry properties. Specially developed for aggressive resins such as epoxy and polyurethane. Longer pot life for complex projects. Pot life 90-120 minutes, cure time 24 hours.
• Silicone Condensation HT 60 - Heat-resistant hard condensation silicone for extreme temperatures. Shore A 60 hardness combined with temperature resistance makes it ideal for industrial applications. Wacker Elastosil 4470 base with T40 hardener.

🔹 Soft Tin Silicones

• Silicone Condensation 5 Soft - Very soft condensation silicone for delicate applications. Shore A 5 hardness offers maximum flexibility for fine details and fragile objects. A-component combined with universal B-components.
• Silicone Condensation 35 - Moderately hard condensation silicone for firmer molds. Shore A 35 hardness ensures good dimensional stability while maintaining sufficient flexibility. A-component for use with universal hardener systems.

🔹 Kneadable Silicones

• Wacker Elastosil M 1470 Kneadable - Professional kneadable silicone from Wacker for manual shaping. Ideal for molding charms, small objects, and flat items. Pot life 10-20 minutes, cure time 5 hours. No mixing ratio required.
• Stensil ECO 20 Orange - Environmentally friendly kneadable silicone in orange color. Shore A 20 hardness perfect for hobby applications. Easy to knead and shape without tools. Suitable for beginners and educational purposes.
• Stensil ECO 30 Sand-colored - Sand-colored kneadable silicone with medium hardness. Shore A 30 offers a good balance between workability and end result. Neutral color suits various applications. Environmentally friendly ECO-formulation.
• Stensil ECO 50 L Pink - Pink kneadable silicone with medium hardness for decorative applications. Shore A 50 hardness ensures stable end results. Popular for artistic projects and hobby applications. Longer pot life due to L-formulation.
• Stensil ECO 60 Orange - Harder orange kneadable silicone for firmer molds. Shore A 60 hardness ideal for repeated use and production applications. Retains kneadability despite higher final hardness. Durable ECO-formulation.
• Stensil ECO 70 Blue - Blue hard kneadable silicone for professional applications. Shore A 70 hardness offers maximum durability and dimensional stability. Suitable for industrial prototyping and production support. Environmentally friendly composition.
• Stensil ECO 95 Blue - Very hard blue kneadable silicone for extreme applications. Shore A 95 hardness ensures maximum rigidity and durability. Ideal for precision applications and long-term use. Highest hardness in ECO-series.

🔧 Tools & Accessories

• B2 - B Component Universal - Universal hardener (B-component) for condensation silicone systems. Compatible with all A-components in the 5, 20, and 35 series. Standard mixing ratio ensures optimal curing and properties.
• B5 - B Component Universal - Alternative universal hardener with adapted formulation. Suitable for all condensation silicone A-components. Offers slightly different processing properties for specific applications. Economical choice.
• T47 B Component Fast - Fast hardener for reduced curing time of condensation silicones. Ideal for time-critical projects where quick demolding is required. Retains all properties of standard systems but with accelerated reaction.
• T21 B Component - Special hardener optimized for resistance to aggressive materials. Reduces inhibition when in contact with problematic substrates. Ideal for difficult applications where standard systems fail.
• Silicone Adhesive Elastosil E43 - Food-safe silicone adhesive for bonding silicone parts. FDA-approved for direct food contact. Transparent curing and flexible bond. Ideal for repairs and assembly of culinary molds.
• Silicone Adhesive Elastosil E43N - Neutral variant of the E43 silicone adhesive with improved adhesion. Food-safe and suitable for various substrates. No acetic acid release during curing. Professional quality for critical bonds.

🎨 Special Applications

• LSR Topcoat HE - Matting topcoat for silicone surfaces with friction-reducing properties. Creates natural skin texture on silicone prosthetics and masks. Reduces gloss and improves grip. Professional finish for SFX and medical applications.
• Elastosil FX Slow - Slow-curing FX silicone for complex special effects projects. Extended working time allows for detailed shaping. Popular in film and theater for realistic effects. Professional quality.
• Elastosil FX Thixo - Thixotropic FX silicone that does not run on vertical surfaces. Ideal for building volume and texture without supporting structures. Retains shape during processing. Essential for professional makeup effects.
• Elastosil M 4630 - Premium industrial silicone for high-quality production applications. Developed for extreme conditions and long-term use. Excellent mechanical properties and chemical resistance. Professional industrial quality.
• Elastosil RT 623 - Specialized silicone for specific industrial applications. Unique properties make it suitable for niche markets. Developed according to strict quality standards. Limited availability for special projects.

Why Choose Siliconesandmore?

• ✓ Largest assortment of silicone casting rubber in the Netherlands
• ✓ Expert advice for every application
• ✓ Fast delivery within 24 hours
• ✓ Professional quality at competitive prices
• ✓ Technical support from specialists
• ✓ Secure payment and reliable service

Do you have questions about which silicone casting rubber best suits your project? Contact our experts for personal advice!