

⚓ Elevate your epoxy game—because your projects deserve the best finish!
West System 406-7 Colloidal Silica is a high-viscosity epoxy additive designed to control flow and prevent runoff on vertical and overhead surfaces. It enhances the strength, abrasion resistance, and consistency of epoxy fairing compounds, curing to an off-white color. Ideal for woodworking and marine applications, this 5.5oz bottle delivers professional-grade results trusted by experts.



















| ASIN | B005150RUW |
| Best Sellers Rank | #191,369 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #992 in Epoxy Adhesives |
| Brand | WEST SYSTEM |
| Brand Name | WEST SYSTEM |
| Colour | off-white |
| Compatible Material | Fibreglass |
| Container Type | Bottle |
| Customer Reviews | 4.9 out of 5 stars 80 Reviews |
| 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 |
| Material | Colloidal Silica |
| Material Type | Colloidal Silica |
| Model | 406-7 |
| Other Special Features of the Product | 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 Special Feature Controllable viscosity, Prevention of epoxy runoff, Improved strength and consistency of fairing compounds See more |
| Specific Uses For Product | Woodworking |
| UPC | 811343011505 783847056576 |
| Unit Count | 5.5 Grams |
| Viscosity | High |
| Volume | 5.5 Fluid Ounces |
| Water Resistance Level | Water Resistant |
A**S
West system the best
M**L
Great stuff…not easy to work with, BE CAREFUL and go slow!!
M**E
Works well for fairings
T**U
Home run for my rustic wood flooring project, allowing me to fill large holes that unthickened epoxy would have run through
M**.
O
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