Addition Cure RTV Silicone. Also called 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 base
• 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
• 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!) onion and garlic vapours and juices. Our two stock grades of the Viscolo Series are listed below, please select either Soft or Hard using the radio buttons on the product page. Viscolo 13 is referred to as soft, Viscolo 22 as Medium.