Wacker ELASTOSIL® VARIO 40 Normal – Transparent Platinum Silicone for Molds & Prototyping
Wacker ELASTOSIL® VARIO 40 Normal – Transparent Platinum Silicone for Molds & Prototyping
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Premium Transparent Platinum Silicone for Professional Mould and Prototyping Applications
Wacker ELASTOSIL® VARIO 40 Normal is a 2-component, addition-curing (platinum-cure) pourable silicone with Shore A 40 hardness and fully transparent colour, specially developed for moulds where visibility of the cast object is essential. The Normal variant offers a pot life of 150 minutes and a demoulding time of 6 hours at 23°C – ideal for careful processing of complex moulds without time pressure. This professional silicone combines excellent flowability (10,000 mPa·s), high tensile strength (8 N/mm²), food safety, and broad chemical resistance with unique adaptability via the VARIO system. Mixing ratio 10:1 (A:B).
Key Benefits
- Fully transparent: The cast object remains visible in the mould for precise and correctly positioned cutting – ideal for prototyping and complex geometries
- 150 minutes pot life (Normal): Ample processing time for careful pouring, degassing, and positioning of complex moulds
- Adjustable hardness via VARIO system: Mix VARIO 15 and VARIO 40 A-components for any desired Shore A hardness between 15 and 40
- Adjustable curing speed: Combine Normal and Fast B-component for any desired curing time – total B always 10% of A-weight
- Food-contact compliant: Platinum-cure technology without by-products, compliant with BfR XV and FDA 21 CFR 177.2600, suitable for culinary moulds
- High mechanical strength: 8 N/mm² tensile strength and 15 N/mm tear strength for durable, long-lasting moulds
Typical Applications
- Prototyping and rapid tooling: transparent moulds for precise cutting of complex models
- Culinary moulds for chocolate, confectionery, and food-safe applications (FDA compliant)
- Stamps and pad printing industry: high detail reproduction and chemical resistance
- Podiatry and medical simulation: moulds and anatomical models
- Moulds for polyurethane, polyester, epoxy, and acrylic resin
- Robotics, animatronics and set building: flexible silicone objects
Processing Instructions:
- Mix A and B components in a 10:1 ratio by weight
- Mix slowly in a figure-8 motion to minimise air entrapment
- Optional: vacuum immediately after mixing to remove air bubbles
- Pour within the 150-minute pot life
- Allow 6 hours to cure at 23°C (or accelerated in an oven)
- Recommended: post-bake at 100°C for 2-3 hours for complete outgassing
Customisation Options:
Mixing Calculator for Your Perfect Silicone
Calculate exactly how much Elastosil Vario 15, Vario 40, Catalyst Vario F (fast) and Normal you need.
All values at 20 °C. Temperature has a big influence!
1. Desired hardness (Shore A)
2. Desired pot life
3. Total desired mix amount (A + B in grams)
B-component = always 10% of A-componentWacker Chemie is a global leader in silicone technologies for professional mould making, prototyping, and food-safe applications with over 100 years of expertise.
Important Warning: Inhibition in Addition-Curing Silicones
Please note: This is an addition-curing (platinum-cure) silicone. These silicones can be inhibited by sulphur, nitrogen, amino compounds, and metal salts. If you are unsure whether the products you are using (including gloves, spatulas, and cups) contain these ingredients, please perform a small test first. These substances can be found in many latex gloves, some plasticines, paints and glues, condensation-curing silicones, 1-component silicone sealants, natural rubbers, and 3D printing material (especially stereolithography). If you wish to use these, you will need to apply a protective layer of polyvinyl alcohol (PVA).
⚠️ What the compliance statements do and do not say
Wacker states compliance for this product for food contact: EC 1935/2004, BfR XV Silicones (volatiles max 0.5 %, extractables max 0.5 %) and FDA 21 CFR 175.300 and 177.2600. Wacker further declares that phthalates, bisphenols, PVC, PFAS, SCCP, heavy metals, latex and fragrances, among others, are not intentionally introduced, that the product is not of animal or human origin, is not derived from GMOs and does not undergo irradiation, and that the substances listed in the toy standards EN 71-3 and EN 71-9 and in CPSIA are not intentionally introduced.
This is not a statement about skin contact or biocompatibility. We do not use the term skin-friendly as a certification, because no such certification exists at raw material level. Wacker itself notes that regulatory sanctioning of the ingredients does not imply the finished product is considered safe, and that responsibility for the finished article and for migration, extraction and volatile testing rests with its manufacturer.
Note for body-contact applications: the WACKER SILICONES HEALTH CARE POLICY generally does not permit use in contact with the genital mucosa, generally excludes applications of more than 30 days, and assesses contraceptive and reproductive devices case by case. If you are working on such a product, contact us before ordering.
Professional Support
Our technical specialists advise on hardness mixing, curing speed, vacuum techniques, and optimal results for your specific mould, prototype, or stamp application. Contact us for technical datasheets, processing instructions, or advice on the VARIO system.
Product Properties
- Hardness40Shore AHardness of the silicone material
- Shrinkage0.1%Linear shrinkage after curing
- ColorTranslucentColor of the finished product
- TransparencyTranslucentDegree of transparency
- Viscosity10000mPa·sViscosity of the uncured silicone
- Density1.15g/cm³Density of the cured material
- Mix ratio10:1Mixing ratio A : B
- Tensile strength8.0MPaMaximum tensile force before breaking
- Tear strength15.0kN/mResistance against tearing
- Elongation at break450%Maximum stretch before breaking
- Pot life150minutesWorking time after mixing
- Cure time360minutesTime until full cure
Component Properties
- Color ATranslucentColor of component A
- Color BTranslucentColor of component B
- Viscosity A15000mPa·sViscosity of component A
- Viscosity B100mPa·sViscosity of component B
- Density A1.15g/cm³Density of component A
Thermal Properties
- Max. temperature240°CMaximum service temperature
- Min. temperature-40°CMinimum service temperature
Certification & Safety
- Food-gradeYesSuitable for food contact
- FDA certifiedYesMeets FDA standards (21 CFR)
Application
- Use casePrototyping and rapid tooling, Culinary moulds, Podiatry and medical simulationIntended use
- Silicone type["Addition curing","RTV-2"]Type of silicone or polymer
- Cure speedNormalHow quickly the material can be demoulded
Safety Information
Always work with two-component silicones in a well-ventilated room and avoid contact with skin and eyes. Do not eat, drink or smoke while working and wash your hands afterwards. Wear protective gloves (for example nitrile) and safety glasses. Keep the components tightly closed, dry and out of the reach of children. Always consult the supplied safety data sheet (SDS) for full information on hazards, handling, storage and first aid.| Safety Pictograms | Safety Data Sheets (SDS) |
|---|---|
Required protection (ISO 7010)
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Technical data sheets
- ELASTOSIL VARIO 40 en 2026.04.14 2 Download data sheet (PDF)
- Product Information Silicones Addition Transparent 40 Normal Download data sheet (PDF)
- Brochure Vario 15 40 Download data sheet (PDF)
- PCS Product compliance sheet Vario 40 Download data sheet (PDF)
- TDS ELASTOSIL VARIO 40 Download data sheet (PDF)
- VARIO 40 FDA Download data sheet (PDF)
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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.