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🛠️ Elevate your epoxy game—thicker, stronger, flawless every time!
West System 406-7 Colloidal Silica is a premium 5.5 oz epoxy thickening additive designed to control viscosity, prevent runoff on challenging surfaces, and enhance the strength and consistency of fairing compounds. Made in the USA and fully compatible with WEST SYSTEM epoxy resins, it cures to a creamy off-white paste ideal for professional-grade structural and finishing applications.


| ASIN | B005150RUW |
| Best Sellers Rank | #39,451 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #53 in Tile Epoxy Adhesives |
| Brand | West System |
| Brand Name | West System |
| Color | off-white |
| Compatible Material | Fiberglass |
| Container Type | Can |
| Customer Reviews | 5.0 out of 5 stars 111 Reviews |
| Full Cure Time | 24 hours |
| Global Trade Identification Number | 00811343011505 |
| Included Components | FILLER COLLOIDAL SILICA 5.5 OZ |
| Item Form | Powder |
| Item Highlight | Control epoxy viscosity for reliable gluing and coating results and easier application with this thickening additive. |
| Item Package Quantity | 1 |
| Item Type Name | MARINE ACCESSORIES |
| Item Weight | 5.5 ounces |
| Manufacturer | WEST SYSTEM |
| Material | Resin |
| Material Type | Resin |
| Model | 406-7 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Controllable viscosity, Prevention of epoxy runoff, Improved strength and consistency of fairing compounds |
| Part Number | 406-7 |
| Special Feature | Controllable viscosity, Prevention of epoxy runoff, Improved strength and consistency of fairing compounds Special Feature Controllable viscosity, Prevention of epoxy runoff, Improved strength and consistency of fairing compounds See more |
| UPC | 811343011505 783847056576 |
| Unit Count | 5.5 Ounce |
| Viscosity Level | High |
| Volume | 5.5 fluid ounces |
| Warranty Description | Limited Warranty |
| Water Resistance Level | Water Resistant |
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