Professional grade moulding and casting materials for everyone!

Silicone Condensation 20 (Medium Hard, Bleeding) Silicone Condensation 20 (Medium Hard, Bleeding) Silicone Condensation 20 (Medium Hard, Bleeding)

Silicone Condensation 20 (Medium Hard, Bleeding)

The Silicone Condensation 20 is a 2-component (poly-condensation) molding silicone which cures at room temperature.

431 items in stock

  • Excl. BTW €16,49
  • Incl. BTW€19,95

0 reviews

write a review

Add to Compare

  • Good liquid (self-bleeding)
  • Easy to mix
  • After curing strongly
  • Low shrinkage (<0.3%)
  • Colour White
  • Bleeding

Silicone Condensation 20

These Silicones are ideal for making soap Moulds, Candle Moulds, Concrete moulds etc. 


The silicone Condensation 20 - A + B is a 2-component (poly-condensation curing) castable molding silicone which cures at room temperature. The silicone has a good fluidity and gives great detail while still remaining strong. Silicone C 20 -A + B are excellently suited for the casting of eg cement, plaster, wax, soap, and many other casting materials.

Technical data

Mixing ratio (weight)


[A: B]


100: 2 (1.5 ~ 3)

Pot Life @ 20 ° C





De-mould time @ 20ºC





Full strength after







[Shore A]



Viscosity @ 20 oC


[mPa s]


12.000 +/- 2.000

Tensile strength





Note: Pot life and de-mould time are highly dependent on the mixing ratio and Humidity! By adding more than 2% silicone B (hardener) or at high humidity, the pot life and de-mould time are shorter.

The silicone C 20 - A + B can easily be mixed by hand or by machine. Mix the A and B component carefully and in the indicated ratio (preferably 2%, you can add between 1.5-3% B comp)

Example: To 1 kg of A-Comp add preferably 20 grams of B-component. You can vary between 15 grams (1.5%) up to 30 grams (3%). Less or more will inhibit cure or alter the final properties of the rubber.

At 1.5%, the silicone will take longer to harden giving air bubbles more time to escape. With 3% B component the silicone will cure considerably faster. Process the mixture in the pot life and never take more than you can handle within pot-life.

Only de-mould after a complete cure. If you wish to make a mold by using a brush or spatula you need to add a 3rd component (0.6% -2% Thixo C). Typically 1% will do the trick. Thixo C thickens the mixture and makes it possible to set up the silicone agains vertical surfaces. Please be aware that the mold in this case must be provided with a support cap. This support cap may consist of gypsum bandages or epoxy support cover or acrylic resin with glass fibre fabric.

The products are packaged in packs of 0.5, 1, 5 or 25 kg of A-component and 20, 100 or 500 grams of B-component. All components can also be ordered separately. For larger packages we ask you to contact us through the site.

Provided that the silicone is kept in a sealed package and stored cool and frost-free, the shelf life is at least 1 year.

If you frequently work with the silicone is recommended to wear during processing gloves and properly ventilate the area. For safety instructions, see always the safety data sheet.

Shore (A) :


Color A Comp. :


Color B Comp. :


end Color :


cured density :

1,24 g/cm3

viscosity mixture :

18.000 mPa s

Mixing ratio A: B :


Working Time @ 20 ° C :

100~120 minutes

Curing time @ 20 C :

16~20 hours

tensile strength :

43 Kg/cm2

extensibility :


tear Strength :

> 29,8 Kg/cm

linear shrinkage :


Document Download
Product Information
Manual One piece brush-on mould, brick slip
Manual Making a two piece mould
Manual Mould in one part, badge

customer Reviews Write your own review

Gerelateerde producten

Please accept cookies to help us improve this website Is this OK? Yes No More on cookies »