Remix each of the two components (part A and B) every time before using.

  • Add 100 parts of BLUESIL RTV 4021 A LV to 100 parts of BLUESIL RTV 4021 B LV.
  • Mix thoroughly the two components in a clean vessel until a homogeneous colour is obtained, then, pour in a mould.

Warning: for mixing use only clean steel or plastic vessels.
Crosslinking of RTV vulcanising by polyaddition reaction may be inhibited by contact with products like:
- Heavy metal salts.
- Amines.
- Sulphur and derivatives.
- Catalysts of epoxy resins.
- Latex gloves.


BLUESIL RTV 4021 LV A 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.


BLUESIL RTV 4021 A&B LV is a two components silicone elastomer which cures at room temperature by polyaddition curing reaction (1:1 ratio).

2 Part RTV

  • Excellent reproduction of details.
  • Good mechanical properties.
  • 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 hydrated plaster of Paris.
  • Biocompatibility and no toxicity.
  • High fluidity.

BLUESIL RTV 4021 A&B LV is specially formulated for use in dental laboratories.

Asia Pacific;Europe Middle East Africa;Central and South America;North America




ColorWhitePairedCompASTM D 412
Viscosity2750PairedCompNF T 76102mPa.s




Viscosity2750PairedCompNF T 76102mPa.s
ColorPale blue AzurPairedCompASTM D 412






hardness_cd523e03-72a3-4261-93f9-36f7bbeeafb1hardness_cd523e03-72a3-4261-93f9-36f7bbeeafb1Hardness19PairedMixISO 868sh.A





BLUESIL RTV 4021 LV BBLUESIL RTV 4021 LV B/our_offer/Product/90021739/90021738/BLUESIL-RTV-4021-LV-B