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All technical specifications, safety information and data sheets remain available below.
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This T 40 paste catalyst is primarily intended for the kneadable Wacker Elastosil M 1470.
Processing
The condensation hardening silicone can be easily mixed by hand. Mix the A and B components carefully and in the specified ratio.
T40 mixture = 2%, so for 100 grams of A component you use 2 grams of Wacker T40 paste (B component).
You can use 0.5% less or more hardener. If you use less hardener, the curing takes longer and air bubbles have more time to escape. Be careful not to use too little hardener, because then the silicone may not harden (properly). With more hardener, the curing will go faster, so the mold is ready sooner. The disadvantage is that the mold will also age sooner and will shrink more.
Process the mixture within the pot life (processing time) and never mix more than you can process within the pot life. Wait with de-moulding until the whole has completely hardened.
Please note: Potlife (processing time) and de-moulding time are strongly dependent on the mixing ratio and humidity! When adding more silicone B (hardener) or at higher humidity the potlife and de-moulding time will be shorter!
Shelf life
Provided the silicone is stored in a closed container, cool and frost-free, the shelf life is at least 1 year.
Safety requirements
Wear splash goggles, suitable liquid-tight gloves, an apron and work in a well-ventilated area. See Safety Data Sheet for more information
Further important safety information



Signal word Warning
H-Code hazard statements
H226 Flammable liquid and vapour.
H319 Causes serious eye irritation.
H332 Harmful if inhaled.
H335 May cause respiratory irritation.
H373 May cause damage to organs through prolonged or repeated exposure.





P-Code precautions
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P243 Take precautionary measures to avoid static discharges.
P260 Do not breathe vapour/aerosol.
P280 Wear safety gloves/protective clothing/eye protection.
P304 + P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P312 Call a POISON CENTER/doctor if you feel unwell.
Documentation
SDS Wacker Catalyst Paste T 40 NL.pdf
WACKER Catalyst T series for moldmaking.pdf
Product Properties
- ColorRedColor of the finished product
- Density1.1g/cm³Density of the cured material
- Mix ratio100:2-3Mixing ratio A : B
Physical Properties
- Flash point55°CMin. temperature at which the product ignites
Application
- Use caseHardener for ELASTOSIL M condensation siliconesIntended use
- Silicone type["Auxiliary material"]Type of silicone or polymer
- Cure conditionRoom temperatureCondition under which the material cures
Safety Information
Wacker Catalyst Paste T 40 is volgens Verordening (EG) 1272/2008 ingedeeld als ontvlambare vloeistof categorie 3 (H226), schadelijk bij inademing (H332), veroorzaakt ernstige oogirritatie (H319), kan irritatie van de luchtwegen veroorzaken (H335) en kan schade aan organen veroorzaken bij langdurige of herhaalde blootstelling (H373). Het product bevat tetraethylsilicaat en een organische tinverbinding. Het vlampunt bedraagt 55 graden Celsius (ISO 2719). Houd het product uit de buurt van warmte, vonken en open vuur en zorg voor goede ventilatie bij verwerking. Aanbevolen persoonlijke beschermingsmiddelen tijdens verwerking: vloeistofdichte veiligheidshandschoenen van butylrubber (materiaaldikte minimaal 0,3 mm), een nauwsluitende veiligheidsbril volgens EN 166 en beschermende werkkleding. Bij verneveling of onvoldoende ventilatie is een ademhalingsbeschermingsmasker met combinatiefilter ABEK-P2 aangewezen. Vermijd contact met huid en ogen, eet, drink en rook niet tijdens het werken en was de handen grondig na gebruik. Raadpleeg het volledige veiligheidsinformatieblad (SDS) voor uitgebreide informatie over gevaren, eerstehulpmaatregelen, opslag, verwerking en milieumaatregelen voordat u dit product in gebruik neemt.| Safety Pictograms | Safety Data Sheets (SDS) |
|---|---|
GHS hazard pictograms
Required protection (ISO 7010)
|
| Signal Word | H‑code | Hazard Statement | P‑codes | P‑statements |
|---|---|---|---|---|
| Warning | H226 | Flammable liquid and vapour | P210 P233 P280 P303+P361+P353 P370+P378 |
|
| Warning | H319 | Causes serious eye irritation | P264 P280 P305+P351+P338 P337+P313 |
|
| Warning | H332 | Harmful if inhaled | P261 P271 |
|
| Warning | H335 | May cause respiratory irritation | P261 P271 |
|
| Warning | H373 | May cause damage to organs through prolonged or repeated exposure | P260 P501 |
|
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.