HT 33 Transparent (30 ShA)


HT 33 TRANSPARENT is a bi-component addition cured RTV silicone rubber (base and catalyst with ratio 1:1) which vulcanizes at room temperature.
HT 33 is compatible with all plasters, coatings, polyurethane resins and acrylic resins.

Main application sectors

  •  Mouldmaking and model-making due to its considerable precision in reproduction, high dimensional stability and high mechanical resistance
  • Ceramic serigraphy due to its considerable precision in reproduction, high mechanical resistance and the excellent laser cutting characteristic
  • Tampography due to its high mechanical resistance

Properties

  • Reduced viscosity and easy to mix
  • High chemical resistance to the aggressive components of some types of resin
  • Good resistance to laceration (wear and tear)
  • High level of accuracy in reproducing very small particulars
  • High dimensional stability over time and non-deformability
  • Considerable resistance to high temperatures and to ageing
  • Excellent non-stick effect

Chemical and physical characteristics

  Metric system USA system
Mixing ratio 1 : 1 -
Viscosity of the mix pre-catalisation
7000 - 8000 cP -
Density Base 1.095 g/cc -
Density Catalyst 1.090 g/cc -
Mixing time at 23 °C (73 °F) 1' -
Working time at 23 °C (73 °F) 20’ - 22’ -
Setting time at 23 °C (73 °F) 3h -
Hardness Shore-A after 24 hours 33 ± 2 ShA -
Tensile strenght
4.7 N/mm 682 ± 29 psi
Elongation at break
430% -
Tear resistance (Die B)    16 ± 2 N/mm 91 ± 11 ppi
Tear resistance (Die C) 13 ± 2 N/mm 74 ± 11 ppi
Reproduction of details 2 micron -
Dimensional variation after 24 hours -0.05 % - 0.05% -
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