ALWA SIL CSH15 & CSH19

Silicone rubber ALWA SIL CSH 15 and CSH 19 are silicone impression materials. These materials have extremely high mechanical values. In addition, they are very fast to handle and very easy to handle as well.

The two-component silicone rubbers cure at room temperature. After mixing the two components, a low viscosity liquid develops, which crosslinks to a resistant and rubber-elastic material. During the crosslinking, no exothermic heat is developed. When 1 – 3 % thixotropic agent per component is added, a spreadable mixture is obtained.

Area of application

  • Flexible casting moulds
  • Copy moulds
  • Moulds with undercuts
  • Polyurethane casting moulds
  • Concrete casting moulds

Productvideo ALWA SIL CSH15 & CSH19

Technical data at RT:

Characteristic CSH 15 CSH 19
Silicone type Condensation Condensation
Hardness (shore A) ~ 14 – 16 ~ 19 – 21
Mixing ratio (%) 100:3 100:3
Colour Translucent, red, blue, green White, red, blue, green
Pot life at 22 °C (min.) ~ 40 ~ 40
Time to demoulding at 25 °C (hrs.) ~ 4 – 5 ~ 4 – 5
Viscosity (mPa s) ~ 15.000 ~ 15.000
Tear-strength (kN/m) ~ 18 ~ 22
Tensile strength (MPa)  ~ 3,8 ~ 4
Elongation (%)  ~ 500 ~ 450
Shrinkage (%)  ~ 0,2 ~ 0,2
Temperature resistance (°C)  ~ 180 ~ 180