ZA 4 LT Red (4 ShA)

ZA 4 LT RED is a bi-component addition cured RTV silicone rubber which vulcanizes at room temperature. Due to the considerable fluidity it is recommended for the duplication of models with accentuated undercuts.
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 excellent laser cutting characteristic
  • Tampography due to itshigh mechanical resistance and excellent ink transfer property
  • Podology due to its high levels of softness and skin compatibility


  • High chemical resistance to the aggressive components of some types of resin
  • Good resistance to laceration
  • High level of accuracy in reproduction
  • High dimensional stability over time
  • Considerable resistance to high temperatures and to ageing
  • Excellent non-stick effect

Chemical and physical characteristics

 Metric systemUSA system
Mixing ratio1 : 1-
Viscosity of the mix pre-catalisation17000 - 1800 cP-
Working time at 23 °C (73 °F)10' - 13'-
Setting time at 23 °C (73 °F)1h 30'-
Hardness Shore-A after 24 hours4 ± 2 ShA-
Tensile strenght1.5 ± 0.3 N/mm218 psi
Elongation at break500%-
Resistance to laceration 4.5 ± 5 N/mm25 ± 3 ppi
The preparation is not considered dangerous according to Directive 67/548/EEC and subsequent amendments.


The ZA 4 LT Red is guaranteed for a period of 12 months if correctly conserved between 5° - 27°C (41° - 80°F). Close the bottles after use, do not invert the caps or the lids between base and catalyst.

Important observations

The advice given verbally, in writing or through demonstration on how to use the product is based on our knowledge. The use and application by the user occurs without the Company having the possibility to check and therefore remain the responsibility of the user.


DT231611 kg + 1 kg
DT231625 kg + 5 kg
DT2316325 kg + 25 kg

© Zhermack SpA - All rights reserved - Via Bovazecchino, 100 45021 Badia Polesine (RO), Italy
Tel. +39 0425 597611 - Fax. +39 0425 53596 - Email
P.IVA 00594630295 - C.F. P.IVA IT00594630295 - R.E.A. 86603 - R.I. RO 00594630295 - M. RO 001381Isc. Reg. A.E.E. IT07111000002 - Cap. Soc. € 1.032.000,00

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