406 Colloidal Silica - Adhesive Filler Additive
406 Colloidal Silica is a thickening additive used to control the viscosity of the epoxy and prevent epoxy runoff in vertical and overhead joints. 406 is a very strong filler that creates a smooth mixture, ideal for general bonding and filleting.
406 is also a versatile filler and is often used in combination with other fillers. Notably, it can combine to improve the strength, abrasion resistance and consistency of fairing compounds, resulting in a tougher, smoother surface.
Finish color is off-white.
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