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🛠️ Elevate your epoxy game—thicker, stronger, flawless every time!
West System 406-7 Colloidal Silica is a premium USA-made epoxy thickening additive designed to control viscosity, prevent runoff, and enhance the strength and consistency of fairing compounds. Ideal for vertical and overhead applications, it cures to a creamy off-white paste compatible with WEST SYSTEM epoxy resins, delivering professional-grade results in woodworking and marine projects.



















| ASIN | B005150RUW |
| Best Sellers Rank | #281,490 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,173 in Epoxy Adhesives |
| Brand Name | WEST SYSTEM |
| Colour | off-white |
| Compatible Material | Fibreglass |
| Container Type | Bottle |
| Country of Publication | USA |
| Customer Reviews | 5.0 5.0 out of 5 stars (92) |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00811343011505 |
| Included Components | FILLER COLLOIDAL SILICA 5.5 OZ |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Type Name | MARINE ACCESSORIES |
| Item Weight | 5.5 Ounces |
| Manufacturer | WEST SYSTEM |
| Manufacturer Part Number | 406-7 |
| Material Type | Resin |
| Model | 406-7 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Controllable viscosity, Prevention of epoxy runoff, Improved strength and consistency of fairing compounds |
| Specific Uses For Product | Woodworking |
| UPC | 811343011505 783847056576 |
| Unit Count | 5.5 Grams |
| Volume | 5.5 Fluid Ounces |
| Water Resistance Level | Water Resistant |
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