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West System 406-7 Colloidal Silica Adhesive Filler 5.5oz

        West System 406-7 Colloidal Silica Adhesive Filler 5.5oz

        SKU: WS4067

        WEST SYSTEM® 406 Colloidal Silica Adhesive Filler is a versatile, high-strength epoxy thickening additive that creates a smooth, non-sag adhesive for structural bonding, filleting, and gap filling. One of the most popular fillers in the WEST SYSTEM line, 406 increases epoxy strength, improves moisture resistance, and is ideal for marine, woodworking, and composite applications.

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        West System Epoxies
        • size: 5.5oz
          1.7oz
          5.5oz
        • $41.82
        In stock(938 items available)

        WEST SYSTEM® 406 Colloidal Silica Adhesive Filler is a premium epoxy thickening additive designed to produce strong, moisture-resistant structural adhesives and smooth, durable fillets. Made from fumed silica, this white powder blends easily with WEST SYSTEM 105 Epoxy Resin and compatible hardeners to create a non-sagging epoxy mixture that remains easy to apply on vertical and overhead surfaces while delivering exceptional bonding performance.

        As one of the most widely used general-purpose adhesive fillers in the WEST SYSTEM product line, 406 Colloidal Silica significantly increases the strength, toughness, and water resistance of cured epoxy. It is ideal for structural bonding, gap filling, filleting, laminating, and reinforcing joints in wood, fiberglass, composites, and many other materials. It can also be blended with other WEST SYSTEM fillers to modify handling characteristics, sanding properties, or finished appearance for specialized applications.

        Compatible with WEST SYSTEM 105 Epoxy Resin, 200 Series Hardeners, G/flex® 650, and G/5® Five-Minute Adhesive, 406 Colloidal Silica is trusted by professional boat builders, repair technicians, woodworkers, and composite fabricators for demanding marine and industrial projects.

        Features & Benefits

        • General-purpose, high-strength epoxy thickening additive
        • Produces a smooth, non-sag adhesive for vertical and overhead repairs
        • Excellent for structural bonding, filleting, gap filling, and laminating
        • Increases cured epoxy strength, toughness, and moisture resistance
        • Works with wood, fiberglass, composites, metals, and many other materials
        • Can be blended with other WEST SYSTEM fillers to customize consistency and sanding characteristics
        • White fumed silica powder mixes easily into epoxy
        • Compatible with WEST SYSTEM 105 Resin, 200 Series Hardeners, G/flex® 650, and G/5® Five-Minute Adhesive
        • Ideal for marine repair, boat building, woodworking, composite fabrication, and general structural bonding



          • SKU
            WS4067
          • Weight
            0.6 LB
          • Dimensions (L x W x H)
            5.25 x 5.25 x 10.75 IN
        • size
          5.5oz
        • Manufacturer
          West System Epoxies
        • UNIT
          EACH
        • Availability
          In Stock
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