Silicone Additives

Additives for TinSil and PlatSil silicone formulas.

Important! Some additives are specific to certain formulas. Read product descriptions carefully.

34 products
  • PlatSil Hardener - All Sizes - Fox and Superfine
    $61.00
    $61.00
  • PlatSil 71/73R Retarder - Fox and Superfine
    $15.00
    $15.00
  • PlatThix Thickener - All Sizes - Fox and Superfine
    $18.00
    $18.00
  • TinThix Silicone Thickener (1lb) - Fox and Superfine
    Sold out - $7.50
    $7.50