Wacker CENUSIL® M 830 A/B – Translucent Addition-Cure Silicone for Concrete Moulds & Reproduction Moulds

Product form

Wacker

Wacker CENUSIL® M 830 A/B – Translucent Addition-Cure Silicone for Concrete Moulds & Reproduction Moulds

✔ Addition-cure (platinum) silicone, shrink-free
✔ Shore A 26
✔ Translucent
✔ Mix ratio 1:1
✔ Pot life 60 min. (23 °C)
✔ Demouldable after 14-16 hours (23 °C)
✔ Viscosity 8,000 mPa·s Read more

€1.100,00 Incl. BTW

SKU: A10472

30-day return period

More than 100,000 satisfied customers

Pay afterwards with Klarna

Lowest Price Guarantee on Silicones– We match the price +5% extra discount

This product is ordered regularly

50 kg. Set (25 A + 25 B)

€1.100,00

€22,00/kg

✅ Lowest Price Guarantee – Europe
Found this silicone product cheaper elsewhere in Europe? We match the price + 5% extra discount. Terms

Do you have a question about this product?

Contact Us

✔ Addition-cure (platinum) silicone, shrink-free
✔ Shore A 26
✔ Translucent
✔ Mix ratio 1:1
✔ Pot life 60 min. (23 °C)
✔ Demouldable after 14-16 hours (23 °C)
✔ Viscosity 8,000 mPa·s

Translucent addition-cure silicone for concrete moulds and reproduction moulds

Wacker CENUSIL® M 830 A/B is a pourable, addition-curing (platinum) two-component silicone rubber that cures at room temperature without shrinkage. Both components are translucent with a viscosity of 8,000 mPa·s, so the silicone flows well and de-airs itself. You mix 1:1 and have 60 minutes pot life at 23 °C. You can demould after 14 to 16 hours. The cured rubber has a hardness of Shore A 26, a tensile strength of 5 N/mm² and 500 % elongation at break.

Key benefits

Shore A 26: a versatile hardness for most moulds.
Mix ratio 1:1: easy to weigh and mix.
Shrink-free cure: dimensionally accurate moulds, even at large volumes.
Good flow and self-de-airing: 8,000 mPa·s per component.
Translucent: you can see the model through the mould when cutting it open.

Typical applications

✓ Moulds for concrete and artificial stone
✓ Reproduction moulds for casting resins and plaster
✓ Production moulds for small and medium runs

Application

Stir component A and component B separately and thoroughly.
Weigh A and B in a 1:1 ratio and mix slowly and carefully until homogeneous.
De-air the mixture, preferably in a vacuum chamber.
Pour within the 60-minute pot life (23 °C).
Demould after 14 to 16 hours at 23 °C. Heat speeds up the cure.

⚠️ Inhibition with addition-cure silicones

The platinum catalyst is in component A. Curing can be inhibited by sulphur, nitrogen, amine compounds and metal salts. These are found in, among other things, latex gloves, sulphur-containing clay, condensation-cure silicones, some paints and adhesives and certain 3D printing materials. If in doubt, run a small test first.

Points to note

✓ Only use components A and B from the same batch number.
✓ The expiry date of each batch is on the label. After that date the silicone is not automatically unusable, but check its properties before you use it.
✓ This product is intended for the business market and is supplied as a 50 kg set.

Professional support

Looking for a different pack size, or not sure which silicone suits your casting material? Email us at info@siliconesandmore.com and we will be happy to help.

Safety Information

No hazard classification is currently known for this product. Treat it as you would any chemical raw material: work carefully and in a well-ventilated area. Wear protective gloves (not latex, which can inhibit the cure) and eye protection. Avoid contact with skin and eyes and wash your hands after work. Keep the product 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)

More information about H and P statements: UK HSE &ECHA

Our story

Our story began with our father, the founder of Nedform BV. We— Roel, Rutger, and Rob Collaris —are his sons and wanted to bring his passion and knowledge to the online world. That's how SAM (Silicones and More) was born—a creative space for everyone.

Whether you're a beginner, an expert, or an enthusiastic DIYer looking for the right tools, materials, and some guidance, you've come to the right place. We've worked with silicones, resins, and casting materials ourselves for years. That's why we not only deliver quality but also genuine support—based on experience.

Small team with a great love for creating

Honest advice and reliable materials!

We help makers bring their ideas to life.

More about us

FAQs

What is the delivery time of my order?

Orders placed and paid for on business days will be shipped on the same day in most cases. Orders received on weekends will be processed on the next business day.

We always do our best to ship orders as quickly as possible, but actual shipping times may vary due to high volume, stock availability, or carrier circumstances.

Delivery time depends on the destination country and the carrier. Below is a general indication:

Netherlands: usually within 1 business day
Belgium & Germany: typically within 1–2 business days
Other countries: depends on the destination and the local carrier

Please note: these are guidelines, not guarantees. The final delivery time may differ due to factors beyond our control, such as sorting center delays, public holidays, or exceptionally high volume.

What is the return policy?

We offer a 30-day return policy as an added service. If you'd like to return an item or if there's something wrong with your order, please email us at info@siliconesandmore.com with your name and order number within 30 days of delivery. We'll help you quickly. The full terms and conditions can be found on our returns page.

How can I track my order?

Once your order has been processed and shipped, you'll receive a track and trace code by email, allowing you to easily track your package. Please note that it can sometimes take up to 24 hours after processing for the track and trace to be active.

I have a problem with my order, how can I reach you?

If you have any questions or run into any problems, please feel free to contact us via our contact page or email us at info@siliconesandmore.com . We'll be happy to help you quickly.

If you want an immediate answer, ask our chatbot. They have extensive knowledge of all our products and can often help you right away!

Can I also order for business purposes?

Yes, business orders are possible . Customers within the EU outside the Netherlands can order VAT-free with a valid EU VAT number (0 percent intra-Community supply).

Enter your VAT number on the shopping cart page , not at checkout.

Go to the shopping cart via the link below and enter your VAT number and email address, after which the VAT will be automatically removed.

https://siliconesandmore.com/cart

Please note that if you only enter your VAT number at checkout, it will not be processed correctly and VAT may still be charged.

Huismerk - SAMSAM Bodycasting Set

Huismerk - SAMPorcelain Plaster – Premium Casting Plaster for Molds & Detailed Casts

WackerWacker Elastosil Vario 15 Normal – Translucent Platinum Silicone for Molds & Prototyping

SAM - Silicones and MoreSilicone Condensation 20 Universal Set – Molding rubber for universal molds

Wacker CENUSIL® M 830 A/B – Translucent Addition-Cure Silicone for Concrete Moulds & Reproduction Moulds

Wacker CENUSIL® M 830 A/B – Translucent Addition-Cure Silicone for Concrete Moulds & Reproduction Moulds

Pairs well with