West System Fillers

403 Microfibers Adhesive Filler is a fine fiber blend used to thicken epoxy blended resin/hardener and create a multi-purpose adhesive. Excellent for bonding wood. It can be blended into any WEST SYSTEM 105 Resin/20X Hardener combination, G/flex Epoxy 650, or G/5 Five-Minute Adhesive and cure to an off-white color.

406 Colloidal Silica is an epoxy thickening additive used to control the viscosity of the epoxy. It prevents epoxy runoff in vertical and overhead joints creating a smooth mixture, ideal for general epoxy bonding and filleting. 406 can be used to improve strength, abrasion resistance, and consistency of epoxy fairing compounds. Cures to an off-white.