Silicone Addition Green 30 Set – Pourable Addition Mold Rubber for Reproduction Molds & Concrete Molds
Silicone Addition Green 30 Set – Pourable Addition Mold Rubber for Reproduction Molds & Concrete Molds
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Delivery to Netherlands: usually within 1 working day
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Premium Pourable Addition Mold Rubber for Professional Reproduction and Concrete Mold Applications
Silicone Addition Green 30 is a pourable, addition-curing (platinum) RTV-2 mold rubber that cures at room temperature without chemical shrinkage. The two components are mixed 1:1 by weight and each has a viscosity of 8,000 mPa·s, with excellent flowability and self-degassing. Once cured, it forms a green rubber with a hardness of Shore A 27 and a tear strength of 20 N/mm. The pot life is 60 minutes and the mold can be demolded after 6 hours at 23 °C. Thanks to its good resistance to common reproduction materials and its high tear strength, this mold rubber is especially suited to molds of models with many undercuts, to concrete molds and to dimensionally accurate copies.
Key Benefits
- Hardness Shore A 27 – flexible enough to demold models with extensive undercuts, holes and gaps.
- Tear strength 20 N/mm – the mold does not tear easily when demolding thin and narrow parts.
- Tensile strength 5 N/mm² and elongation at break 450 % – strong, stretchable rubber with stable long-term mechanical properties.
- No chemical shrinkage – dimensionally accurate casts, even with large and complex molds.
- Mixing ratio 1:1 by weight – easy to weigh and process.
- Pot life 60 minutes, demoldable after 6 hours – plenty of working time, and curing can be accelerated considerably with heat.
Typical Applications
- Concrete molds for decorative and architectural elements.
- Reproduction molds of models with extensive undercuts.
- Molds for casting resins in small series.
- Dimensionally accurate copies of models and parts.
- Molds for ornaments, reliefs and decorative pieces.
Processing Instructions
- Stir component A and component B separately and thoroughly first.
- Weigh A and B in a 1:1 ratio by weight. Only use components with the same lot number.
- Mix slowly and carefully, preferably in a figure-8 motion, to limit air entrapment.
- If desired, degas the mixture in a vacuum chamber immediately after mixing.
- Pour within the 60-minute pot life.
- Allow the mold to cure for at least 6 hours at 23 °C. A higher temperature speeds up curing; air bubbles then have less time to escape.
Important Warning: Inhibition of Addition Silicones
This is an addition-curing silicone (platinum cure). Curing can be disrupted by sulfur, nitrogen, amine compounds and metal salts. These substances are found in, among others, latex gloves, some modelling clays, paints and adhesives, condensation silicones, 1-component silicone sealant, natural rubber and certain 3D printing materials. If in doubt, run a small test first or apply a separating layer of polyvinyl alcohol.
Silicones and More, specialist in high-quality mold rubbers and casting materials for professional makers.
Professional Support
Looking for a softer, even more free-flowing variant? Take a look at Silicone Addition Yellow 25. Unsure which mold rubber best suits your model or casting material? Contact us at info@siliconesandmore.com, we are happy to help.
Product Properties
- Hardness27Shore AHardness of the silicone material
- Shrinkage0.0%Linear shrinkage after curing
- ColorGreenColor of the finished product
- Viscosity8000mPa·sViscosity of the uncured silicone
- Density1.05g/cm³Density of the cured material
- Mix ratio1:1Mixing ratio A : B
- Tensile strength5.0MPaMaximum tensile force before breaking
- Tear strength20.0kN/mResistance against tearing
- Elongation at break450%Maximum stretch before breaking
- Pot life60minutesWorking time after mixing
- Cure time360minutesTime until full cure
Component Properties
- Color AGreenColor of component A
- Color BWhiteColor of component B
- Viscosity A8000mPa·sViscosity of component A
- Viscosity B8000mPa·sViscosity of component B
- Density A1.05g/cm³Density of component A
- Density B1.05g/cm³Density of component B
Application
- Use caseReproduction moulds with undercuts, concrete moulds and moulds for casting resinsIntended use
- Silicone type["Addition curing","RTV-2"]Type of silicone or polymer
- Cure speedNormalHow quickly the material can be demoulded
- Cure conditionRoom temperatureCondition under which the material cures
Safety Information
This mold rubber is not classified as a hazardous mixture under the CLP Regulation and carries no hazard pictograms or H statements. Component B can form hydrogen gas on contact with water, alcohols, acids, bases, amines or metal salts; keep the product dry and away from ignition sources. When heated above approx. 150 °C, a small amount of formaldehyde may be released. Wear nitrile gloves and safety glasses during processing and ensure good ventilation. Respiratory protection is not required under normal use, only where mist or spray forms (FFP1). Consult the safety data sheets for component A and component B for complete information on storage, disposal and emergency measures.| Safety Pictograms | Safety Data Sheets (SDS) |
|---|---|
Required protection (ISO 7010)
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Technical data sheets
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.