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Addition-curing silicone rubbers

No volatile substances are released during the curing of addition-curing silicone rubbers. Compared to a condensation-curing system, an addition-curing system has lower shrinkage and higher chemical resistance. Especially the resistance to alkaline components, such as concrete, is higher with addition-curing systems. Other features compared to condensation-curing systems are:

  • Higher temperature and chemical resistance

  • Inhibition sensitivity during curing

  • Higher price per kilogramme

  • Curing time can be accelerated by adding additional heat

Romar-Voss Composites' product range includes the following addition-curing silicone rubbers. Other types of silicone rubbers are available on request.

NEUKASIL RTV 20

  • Colour: blue (combined with A26 hardener)

  • Low shrinkage

  • High tear strength

  • Good flow properties

  • Higher Shore-A: approx. 55

NEUKASIL RTV 23

  • Colour: transparent or blue (combined with A18 hardener)

  • Low shrinkage

  • High tear strength

  • Very good flow properties

  • Shore-A: approx. 25

ProtoSil RTV 240

  • Colour: transparent

  • Low shrinkage

  • High tear and tensile strength

  • Vulcanises at room temperature

  • Shore-A: approx. 40