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Addtion Cure RTV Silicone Rubber

The VISCOLO Range of Addition Cure RTV Silicone Rubber. Also known as Plat Cure or Platinum Cure Silicone, a harder wearing silicone with zero shrink. Made to our specification by a leading silicone manufacturer, it carries the TOMPS brand. Why would you use an addition cure instead of a condensation cure?

  • Exceptionally Low Shrinkage - Zero if the process is followed correctly
  • Dimensionally Stable - The negligible shrinkage means that angles remain true, one reason why this rubber is used in larger toolings
  • Excellent Library Life - If you want a silicone to store on the shelf and it to remain true, select addition cure
  • Lower Viscosity - Our Addition RTV has one of the lowest viscosities of any RTV, less risk of air entrapment
  • Better Chemical Resistance - Tested without mould release with Urethane Fast Casts to 100+ pulls*
  • Easy Mix Ratio - 1:1 by weight or volume. Balanced SG's allows volumetric or weight measures

The only downside to Platinum Cure Silicones is their cure inhibition problems. Due to the chemical processes involved certain products will poison the RTV including sulphites, sulphur, platiscisers, latex gloves (use vinyl or synthetic or just dont touch the material!) onion and garlic vapours and juices. However Viscolo Addition Cure Silicone Rubber is particularly good and isn't even inhibited with super glue! Perform tests to be sure!

We now stock many grades of this rubber which are listed below. ShoreA 22 & 50 are coloured, Shore A 13, 33 & 45 are translucent. Artist oil pigment may be used to colour these translucents if you wish, we recommend Windsor & Newton.

*-Tested with our own PU Fast Cast in a low detail mould with the rubber fully post cured 7 days.

Let's See What We Have Here
Displaying 1 to 6 (of 6 products) Result Pages:  1 
    Product Name   Buy Now 
 Addition Cure RTV Silicone Rubber 13 Shore A 500g to 10kg Kits   Addition Cure RTV Silicone Rubber 13 Shore A 500g to 10kg Kits 
Viscolo 13 - Translucent 1:1 Low Viscosity Rubber - Longer POT @ 40-50 mins
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 Addition Cure RTV Silicone Rubber 22 Shore A 500g to 10kg Kits   Addition Cure RTV Silicone Rubber 22 Shore A 500g to 10kg Kits 
Viscolo 22 - Coloured & Opaque 1:1 Low Viscosity Rubber - Shorter POT @ 14-17 mins
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 Addition Cure RTV Silicone Rubber 33 Shore A 500g to 10kg Kits   Addition Cure RTV Silicone Rubber 33 Shore A 500g to 10kg Kits 
Viscolo 33 - Translucent 1:1 Low Viscosity Rubber - Shorter Potlife @ 20 mins
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 Addition Cure RTV Silicone Rubber 45 Shore A 500g to 10kg Kits   Addition Cure RTV Silicone Rubber 45 Shore A 500g to 10kg Kits 
Viscolo 45 - Translucent 1:1 Low Viscosity Rubber - Short Potlife @ 10-12 mins - Cured 1-1.5hrs
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 Addition Cure RTV Silicone Rubber 50 Shore A 500g to 10kg Kits   Addition Cure RTV Silicone Rubber 50 Shore A 500g to 10kg Kits 
Viscolo 50 - Colured & Opaque 1:1 Low Viscosity Rubber - Medium POT @ 22 mins - Cured 3 hours
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 Rapimould RTV Silicone Rubber 500g   Rapimould RTV Silicone Rubber 500g 
Super fast 20 minute tooling and repairs with Rapimould. 3-5 min pot and cured in 20 mins!
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Displaying 1 to 6 (of 6 products) Result Pages:  1 








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