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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.


STORAGE t < +40°C IN ITS ORIGINAL PACKStore in a cool, dry place with adequate ventilation. Keep away from incompatible materials, open flames, and high temperatures. Store in tightly closed original container. equipped with a degassing device. Suitable containers: polyethylene. Steel drums coated with epoxy-resin.Please consult the Safety Data Sheet of this product.


The 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.


The 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

For information about Storage and Shelf Life for this product, please download the Technical Data Sheet.




Viscosity2750PairedCompNF T 76102mPa.s
ColorPale blue AzurPairedCompASTM D 412




ColorWhitePairedCompASTM D 412
Viscosity2750PairedCompNF T 76102mPa.s






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





BLUESIL RTV 4021 LV ABLUESIL RTV 4021 LV A/our_offer/Product/90021738/90021739/BLUESIL-RTV-4021-LV-A