Fumed Silica Thickener for Resins and Mold Rubbers

• A fine powder that can be added to resins (epoxy) and polyurethane and silicone liquid rubbers to thicken them for brush-on/lay-up applications.
• Consider as an alternative when thickening polyurethane rubbers and plastics; PolyFiber II is not as readily airborne as Fumed Silica.
• Sold in 3lb (5 gallon bucket) and large 10 lb bags.
  
• Usage: Wear protective gear (mask) when working with this, as it's a very fine dust.  Add as much or as little as you want, until you see the desired thickness of the urethane or silicone mold rubber.
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