Bluesil RTV 3825 tends to settle during storage, and must be rehomogenised before use. This should be done directly in the original container, either by hand with a spatula, or mechanically with a stirrer.

Be taken to entrap carefully with little air when the catalyst is added, as it would cause bubbles in the finished product. It is therefore advisable to degas the mixture under a vacuum of 30 to 50 mbar in three to five minutes, applying the vacuum twice in the chamber. Degassing is quicker in a container with a high diameter: height ratio.

3.Cross linking
At 23°C RTV 3825 will cure in 15h. In order to achieve the best possible performance levels from the pads; it is preferable to wait for 72 h before using them.


BLUESIL RTV 3825 may be stored at temperatures between -20°C / -4°F and 30°C / 86°F for up to 6 months from its date of manufacturing.Please consult the Safety Data Sheet of this product.


Bluesil RTV 3825 is a two component silicone elastomer, crosslinking at room temperature by reaction of polycondensation. It yields a soft flexible, elastic material presenting excellent tear resistance.


2 Part RTV

For making moulds and reproduction of objects of complex form with deep undercuts by either brush or casting method.

  • Very good chemical resistance, superior resistance to polyester (PES) resin with high number of reproductions
  • Medium viscosity and good flowability
  • Fast curing
  • High tear strength and medium hardness
  • Good elongation for easy demoulding

Asia Pacific;Europe Middle East Africa




Viscosity> 30000MonocompNF T 76102mPa.s
Gel time27.5MonocompNF T 77 - 107min
Hardness> 22MonocompISO 868sh.A
Elongation> 490MonocompASTM D 412%
Tear strength> 20MonocompASTM D 624N/mm
Tensile strength> 3.1MonocompASTM D 412MPa