

🛠️ Elevate your epoxy game—because your projects deserve precision and power!
West System 406-2 Colloidal Silica is a premium epoxy thickening additive designed to precisely control viscosity, prevent runoff in challenging vertical and overhead joints, and enhance the strength and abrasion resistance of epoxy fairing compounds. It cures to an off-white color, ensuring a smooth, professional finish trusted by industry pros since 2001.

| ASIN | B0000AY1OC |
| Best Sellers Rank | #32,910 in Automotive ( See Top 100 in Automotive ) #103 in Care Corrosion & Rust Inhibitors #1,367 in Oils & Fluids |
| Date First Available | October 1, 2001 |
| Department | unisex-adult |
| Is Discontinued By Manufacturer | No |
| Item Weight | 5 ounces |
| Item model number | 406-2 |
| Manufacturer | Gougeon Brothers, Inc. |
| Product Dimensions | 23 x 15 x 8 inches |
G**Y
West System awesomeness
I’ve dealt with a couple of epoxy brands over the years and West System’s is by far the best all around system that includes both epoxy and fillers. These fillers are a bit pricy when you factor in the weight or volume but they work just like fillers should. I have yet to encounter any negative issues with these fillers, and they all appear to be packaged in a professional environment. The fillers come bone dry and don’t have any impurities in them.
A**L
Great product
Just sticking her really helps when I am trying to fill cavities or I need structural hold do recommend it
J**D
Works great as an epoxy thickener
I mixed some of this colloidal silica with a 2 part epoxy glue to thicken it up. The more you add the thicker the glue mixture gets. The powder is super light, and floats everywhere, so a mask is not a bad idea. Handle it slowly and carefully.
Y**S
Good to Have
Here in Hawaii, even Ace Hardware doesn't have this. Thank you for Amazon to sell this.
N**E
Amazing Product
Used it to add to gelcoat during a crack repair on our boat and it is amazing. ALWAYS USE A RESPIRATOR!!! This is a very fine dust and it will damage your lungs.
B**L
Good product
About this product to fix my Hoosier cabinet. it done a fantastic job.
R**Y
Works well
Similar to other brand products and delivered very quickly. No complaints.
T**T
versatile
I've used this stuff for 40 plus years. Great for patching with epoxy and polyester.
Trustpilot
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