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Polycraft S30 RTV Addition Cure Silicone Rubber Shore A 30

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Addition Cure

*Image(s) For Illustration Purpose Only


Shore A 30 Addition Cure Silicone - Easy 10:1 ratio

Low Shrinkage with good tear strength, excellent resistance to concrete.

This silicone is suited for the detailed reproduction of figures, art objects and similar items ,

Features :

  • Outstanding release properties
  • Good Flow-abilty and long working time
  • Soft Hardness for detailed concrete moulding.
  • Good tear resistance
  • Low Shrinkage
  • Good elasticity for easy removal of complex replica parts
  • Can be made thixo tropic (non flow able) for vertical surface replication
  • Cure time can be accelerated with heat

Cured Properties :

Polycraft S-30 Silicone Unit
Mix Ratio By Weight 10 Base : 1 Catalyst
Working Time @ 23°C 60 mins
Demould Time @ 23°C 24 hrs
Mixed Viscosity mPas 13500
Shore A Hardness A30
Elongation Break % >800
Tear Strength kN/m 22
Cure Colour Pink

*Minimum Cure Temperature : 20°c as lower temperatures may inhibit cure of silicone.

Instructions & datasheet downloads available on tab above. 

Please note this silicone is not suitable for food use. It is also not suitable for direct use on skin.

Inhibition of Cure
Great care must be taken when handling and mixing all addition-cured silicone elastomer systems, that all the mixing tools (vessels and spatulas) are clean and constructed in materials which do not interfere with the curing mechanism, do not use wood and paper mixing utensils. The cure of the rubber can be inhibited by the presence of compounds of nitrogen, sulphur, phosphorus and arsenic; organotin catalysts and PVC stabilisers, epoxy resin catalysts and even contact with materials containing certain of these substances e.g. moulding clays, sulphur vulcanised rubbers, condensation cure silicone rubbers, wood, paper, cardboard, onion and garlic.

Base and catalyst use universal containers for various kit sizes and are supplied by weight, while the supplied containers may not be full, they will contain the correct amount of both base and hardener according to the listing. At point of packaging and dispatch lids may be taped to prevent damage or spillage during transportation.

Technical & Safety Sheets

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