Remix each of the two components (part A and B) every time before using.
Add 100 parts of BLUESIL RTV 4619 A to 100 parts of BLUESIL RTV 4619 B. Mix thoroughly the two components in a clean vessel.
Mix gently in order to avoid air bubbles from being entrapped. Pour on pattern and demould after at least .
Warning: for mixing use only clean stainless steel or plastic vessels. Crosslinking of RTV vulcanising by an addition cure reaction may be inhibited by contact with products like:

  • Heavy metal salts.
  • Amines.
  • and derivatives.
  • Catalysts of epoxy resins.


BLUESIL RTV 4619 B may be stored at a temperature below 40°C / 104°F for up to 24 months from its date of manufacturing.Please consult the Safety Data Sheet of this product.


The BLUESIL RTV 4619 A&B is a two components silicone elastomer which cures at room temperature by an addition cure reaction, with a 1:1 ratio).

2 Part RTV

  • High fluidity.
  • Excellent details reproduction.
  • Transparency.
  • Low linear shrinkage.
  • No release of toxic substances during and after curing.
  • High resistance to inorganic chemicals and UV rays.
  • Good release properties with organic resin and gypsum.
  • Good mechanical properties.

This product is specifically formulated for reproduction in audiology, especially where a good transparency is requested.

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