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West System 406-7 Colloidal Silica is a high-viscosity epoxy additive designed to control flow and prevent runoff on challenging surfaces. Ideal for marine and woodworking applications, it enhances strength, abrasion resistance, and consistency of epoxy fairing compounds, curing to a clean off-white color for professional results.



















| ASIN | B005150RUW |
| Best Sellers Rank | #238,383 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,063 in Epoxy Adhesives |
| Brand Name | WEST SYSTEM |
| Colour | off-white |
| Compatible Material | Fibreglass |
| Container Type | Bottle |
| Country of Publication | USA |
| Customer Reviews | 4.9 4.9 out of 5 stars (88) |
| 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 | Colloidal Silica |
| 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 |
| Viscosity Level | High |
| Volume | 5.5 Fluid Ounces |
| Water Resistance Level | Water Resistant |
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