ELASTOSIL® SC 833 A/B is a pourable, addition-curing, two-component silicone rubber, forming a mainly closed cell foam.

It shows excellent flame resistance and is self extinguishing. 


  • low processing viscosity
  • good processability on automated dispensing equipment
  • easy control of mixing quality due to different colors of the components
  • no ozone damaging blowing agents
  • no release of toxic or strong smelling substances during foaming or curing
  • low smoke gas toxicity
  • low heat of reaction (max. 40 °C)
  • high LOI-value
  • long-term flexible over a temperature range of -50 °C to +200 °C
  • good chemical resistance

Spezifische Merkmale von ELASTOSIL® SC 833 A/B

  • hitzebeständig
  • komprimierbar
  • Schaum
  • schwer entflammbar
  • zweikomponentig













ELASTOSIL® SC 833 A/B shows good primerless adhesion to many substrates (metals, glass, ceramics, PA, PBTP). If self-adhesion is not sufficient, surface treatment or a primer may be applied.

For processing we recommend to use automatic mixing and dispensing equipment with dynamic mixer, our technical service will give advice for proper selection.
The quality of the foam is highly influenced by processing parameters (e. g. addition of air, type of mixer) and environmental parameters. As ELASTOSIL® SC 833 A/B is an addition-curing system certain substances can inhibit the foaming and curing process. Our technical service will be glad to help to solve such problems.

We recommend to run preliminary tests to optimize conditions for the particular application.

During foaming and curing hydrogen gas is evolved. Please ensure proper ventilation, if larger amounts of material are processed. Release of hydrogen is almost completed after 24 hours.

The platinum catalyst is contained in component A.

Only components A and B that have the same lot number may be processed together!


The 'Best use before end' date of each batch is shown on the product label. Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.

Vertrieb & Support

Wacker Chemie AG
Heilbronner Strasse 74
70191 Stuttgart
+49  711  61942-0 (Phone)
+49 711 61942-61  (Fax)

Wie können wir Ihnen helfen?

  • Benötigen Sie Unterstützung bei der Produktauswahl oder wünschen Sie eine technische Beratung? Kontaktieren Sie unsere Experten.
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