---
product_id: 5819004
title: "West System 406-2 Colloidal Silica 1.7 oz"
brand: "west system"
price: "€ 37.52"
currency: EUR
in_stock: true
reviews_count: 8
category: "West System"
url: https://www.desertcart.gr/products/5819004-west-system-406-2-colloidal-silica-1-7-oz
store_origin: GR
region: Greece
---

# Enhanced strength & abrasion resistance Precision viscosity control Superior epoxy thickening West System 406-2 Colloidal Silica 1.7 oz

**Brand:** west system
**Price:** € 37.52
**Availability:** ✅ In Stock

## Summary

> 🧩 Master the art of epoxy with flawless control and strength!

## Quick Answers

- **What is this?** West System 406-2 Colloidal Silica 1.7 oz by west system
- **How much does it cost?** € 37.52 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/5819004-west-system-406-2-colloidal-silica-1-7-oz)

## Best For

- west system enthusiasts

## Why This Product

- Trusted west system brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Strength Booster:** Improves structural integrity and abrasion resistance of epoxy compounds
- • **Consistent Texture:** Delivers smooth, reliable fairing compound consistency every time
- • **Zero Runoff Guarantee:** Prevents epoxy drip on vertical & overhead surfaces for flawless application
- • **Versatile Epoxy Enhancer:** Perfect for automotive, marine, and specialty repairs demanding precision
- • **Professional Grade Purity:** Bone-dry, impurity-free formula ensures premium performance

## Overview

West System 406-2 Colloidal Silica is a premium epoxy thickening additive designed to control viscosity and prevent runoff in challenging vertical and overhead applications. It enhances the strength, abrasion resistance, and consistency of epoxy fairing compounds, curing to a clean off-white finish. Trusted by professionals for its purity and reliable performance in automotive and specialty repairs.

## Description

West System 406-2 Colloidal Silica 1.7 oz

Review: 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.
Review: Great product - Just sticking her really helps when I am trying to fill cavities or I need structural hold do recommend it

## Features

- 406 Colloidal Silica is an epoxy thickening additive used to control the viscosity of the epoxy.
- Prevents epoxy runoff in vertical and overhead joints.
- Can be used to improve strength, abrasion resistance, and consistency of epoxy fairing compounds.
- Cures to an off-white color.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0000AY1OC |
| Best Sellers Rank | #23,746 in Automotive ( See Top 100 in Automotive ) #73 in Care Corrosion & Rust Inhibitors #1,079 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 |

## Images

![West System 406-2 Colloidal Silica 1.7 oz - Image 1](https://m.media-amazon.com/images/I/31NhW4Qc77L.jpg)
![West System 406-2 Colloidal Silica 1.7 oz - Image 2](https://m.media-amazon.com/images/I/61B9MCaAKPL.jpg)

## Questions & Answers

**Q: Does the resin remain clear after this is added?  (Some of the other filler additives say that they cure red/brown.)**
A: If using west system epoxy 205 or 206 hardener resin is redish or purple.  The filler is white and turns into a tranlucent opaque of color of resin. NO RESIN WILL NOT REMAIN CLEAR.

## Customer Reviews

### ⭐⭐⭐⭐⭐ West System awesomeness
*by G***Y on February 2, 2024*

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.

### ⭐⭐⭐⭐⭐ Great product
*by A***L on July 31, 2024*

Just sticking her really helps when I am trying to fill cavities or I need structural hold do recommend it

### ⭐⭐⭐⭐⭐ Works great as an epoxy thickener
*by J***D on April 9, 2024*

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.

## Frequently Bought Together

- West System 406-2 Colloidal Silica 1.7 oz
- TotalBoat-14409 Marine Gelcoat for Boat Building, Repair and Composite Coatings (White, Quart with Wax)
- Wax Additive - 4 oz Surfacing Agent for use with Gelcoat and Polyester resins

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**Shop now:** [https://www.desertcart.gr/products/5819004-west-system-406-2-colloidal-silica-1-7-oz](https://www.desertcart.gr/products/5819004-west-system-406-2-colloidal-silica-1-7-oz)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-05*