West System® 406 Colloidal Silica

A thickening additive used to control the viscosity of epoxy and prevent epoxy runoff in vertical and overhead joints. Very strong, it creates a smooth mixture, ideal for general bonding and filleting. A versatile filler, it is often used in combination with other fillers, and can be used to improve strength, abrasion resistance, and consistency of fairing compounds, resulting in a tougher, smoother surface. Color: off-white.