Premium Translucent Silicone for Professional Molds
Wacker Elastosil Vario 15 Normal is a two-component, platinum-cure (addition-crosslinking) casting silicone with translucent, colorless properties and a Shore A 15 softness rating. This high-performance silicone combines very low viscosity (5,000 mPa s) with minimal shrinkage and excellent mechanical properties, specifically developed for dimensionally accurate copies and reproduction molds. The Normal version (Harder VARIO) offers a processing time of 150 minutes, ideal for larger projects. Food-safe according to BfR and FDA guidelines.
Key Benefits
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Translucent and colorless: Molded objects remain visible for accurate positioning and precision cutting of reproduction molds
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Very low viscosity: 3,000 mPa s after mixing for excellent flow around components and self-venting properties
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Flexible processing time: 150 minutes pot life with Härter VARIO (Normal) or 2 minutes with Härter VARIO F (Fast)
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Shore A 15 softness: Very flexible and soft for easy demolding and delicate details
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Excellent mechanical properties: 6,5 N/mm² tensile strength, 900% elongation, weiterreißwiderstand 15 ASTM D 624 B
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Schrumpffreie vulcanization: No chemical shrinkage for dimensionally accurate reproduction
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Modular system: Can be mixed with Elastosil Vario 40 for any desired hardness between 15-40 Shore A
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Food safe & BfR/FDA compliant: Suitable for food contact and culinary applications
Typical Applications
- Prototypenherstellung and rapid prototyping for dimensionally accurate copies
- Reproduction molds for cast resin, concrete, plaster and all common reproduction materials
- Food-safe molds for chocolate, sugar, fondant, and culinary creations
- SFX and prosthetics: skin-friendly molds for masks, facial applications and special effects
- Podiatry and medical simulation for anatomical models and training phantoms
- Molds for polyurethane, epoxy, polyester and acrylic resins (Jesmonite, A1)
Technical Features
Elastosil Vario 15 Normal is supplied as a two-component system with a mixing ratio of 10:1 (base:hardener by weight). The Normal B component (Hardener VARIO) has a pot life of 150 minutes at 23°C and is deformable (demoldable) after 6 hours at room temperature. For faster projects, Harder VARIO F can be used (2-minute pot life, 15 minutes deformable) or a mix of both hardeners for intermediate curing times. Hardness can be adjusted by mixing Vario 15 (Shore A 15) and Vario 40 (Shore A 40) base components—for example, a 50/50 mix gives approximately Shore A 27.5. Full vulcanization: 24 hours at 23°C. Curing can be accelerated by reheating. Density: 1.06 g/cm³. Coloring can be done with 1-4% Elastosil Farbpaste FL. Note: The total hardening component must always be 10% of the base component by weight.
Wacker Chemie is a global leader in silicone technologies for professional molding, prototyping, and industrial applications, with over 100 years of expertise.
Important Warning: Inhibition with Additive Silicones
Note: This is an addition silicone (addition cross-linking/platinum cure). These silicones can be poisoned by sulfur, nitrogen, amino compounds, and metal salts. If you are unsure whether the products you use (including gloves, spatulas, and cups) contain these ingredients, perform a small test first. These substances are found in many latex gloves, some plastilines, paints and adhesives, condensation silicones, one-component silicone sealants, natural rubbers, and 3D printing materials (especially stereolithography). If you do want to use it, you will need to apply a protective layer of polyvinyl alcohol (PVA).
Professional Support
Our technical specialists advise on material selection, processing techniques, hardener selection, hardness adjustments, and optimal results for your specific reproduction molding application. Contact us for technical data sheets, processing guidelines, or advice on inhibition prevention with addition silicones.
