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🛠️ Elevate your epoxy game—thicken, control, and conquer every project with confidence!
West System 406-7 Colloidal Silica is a premium USA-made epoxy thickening additive designed to precisely control viscosity, prevent runoff on challenging surfaces, and enhance the strength and consistency of fairing compounds. Compatible with WEST SYSTEM epoxy resins, it cures to a creamy off-white paste, delivering professional-grade results for woodworking and marine applications.



















| ASIN | B005150RUW |
| Best Sellers Rank | #280,403 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,175 in Epoxy Adhesives |
| Brand Name | WEST SYSTEM |
| Colour | off-white |
| Compatible Material | Fibreglass |
| Container Type | Bottle |
| 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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