West System Brand Not Qualified for Free Shipping West System Colloidal Silica 10 lb #406-B

WEST SYSTEM Colloidal Silica 10 lb #406-B

$346.78 $476.10 -28% OFF

WEST SYSTEM Colloidal Silica 10 lb #406-B

$346.78 $476.10 -28% OFF

WEST SYSTEM Colloidal Silica 10 lb #406-B

$346.78 $476.10 -28% OFF

SKU: WSB-406-B

UPC: 811343011529

More about this item

WEST SYSTEM 406-B Fiberglass & Repair

406 Colloidal Silica is the most versatile epoxy thickening additive in the West System lineup, engineered to give you precise control over epoxy viscosity for a wide range of marine repair and construction applications. This professional-grade 10 lb bulk container provides exceptional value for boatyards, serious DIYers, and contractors who demand consistent, reliable performance.

Superior Thickening Performance:

When blended into epoxy resin, 406 Colloidal Silica transforms liquid epoxy into a non-sagging paste that stays exactly where you apply it. This makes it ideal for vertical and overhead joints where runoff would otherwise be a problem. The smooth, creamy consistency spreads easily and creates professional-quality bonds and fillets without voids or air pockets.

Exceptional Strength & Versatility:

Unlike lightweight fairing fillers, 406 is a high-strength structural additive that creates incredibly strong bonds and fillets. It's the go-to choice for general epoxy bonding, filleting, and any application where maximum strength is required. The smooth mixture it produces is easy to work with and finishes beautifully.

Key Applications:

  • Structural Bonding: Creates maximum-strength adhesive bonds for critical joints
  • Filleting: Produces smooth, strong fillets for tabbing bulkheads and reinforcing corners
  • Gap Filling: Fills voids and gaps without sagging or running
  • Fairing Compound Enhancement: Blend with lightweight fillers to improve strength, abrasion resistance, and workability
  • Vertical & Overhead Work: Prevents epoxy runoff on challenging surfaces

Enhanced Fairing Compounds:

One of 406's most valuable features is its ability to improve other fillers. When combined with lightweight fairing compounds, it significantly increases their strength, abrasion resistance, and workability, resulting in a tougher, smoother surface that's easier to sand and finish.

Universal Compatibility:

406 Colloidal Silica blends seamlessly into WEST SYSTEM 105 Epoxy Resin with any 200 Series Hardener, G/flex Epoxy 650, or G/5 Five-Minute Adhesive, giving you maximum flexibility across your entire epoxy toolkit.

Whether you're building, repairing, or reinforcing, 406 Colloidal Silica delivers the strength, versatility, and ease of use that marine professionals rely on for critical applications.

Part Number: 406-B
UPC Code: 811343011529

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