---
product_id: 526842393
title: "406-7 Collodial Silica 5.5oz, off-white"
brand: "west system"
price: "€ 235.53"
currency: EUR
in_stock: true
reviews_count: 5
category: "West System"
url: https://www.desertcart.fi/products/526842393-406-7-collodial-silica-5-5oz-off-white
store_origin: FI
region: Finland
---

# Controls epoxy viscosity precisely Boosts strength & abrasion resistance Prevents epoxy runoff on vertical surfaces 406-7 Collodial Silica 5.5oz, off-white

**Brand:** west system
**Price:** € 235.53
**Availability:** ✅ In Stock

## Summary

> 🛠️ Elevate your epoxy game—thicken, strengthen, and conquer every surface!

## Quick Answers

- **What is this?** 406-7 Collodial Silica 5.5oz, off-white by west system
- **How much does it cost?** € 235.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/526842393-406-7-collodial-silica-5-5oz-off-white)

## 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

- • **Enhanced Durability:** Reinforce your projects with superior abrasion resistance
- • **Precision Viscosity Control:** Master epoxy flow with exact thickness every time
- • **Seamless Fairing Consistency:** Achieve flawless, smooth finishes that stand out
- • **Trusted Marine-Grade Quality:** Proven performance from a top-rated USA brand
- • **Vertical & Overhead Stability:** No more drips—secure adhesion on challenging angles

## Overview

West System 406-7 Colloidal Silica is a premium epoxy thickening additive designed to precisely control viscosity, prevent runoff on vertical and overhead joints, and enhance the strength and abrasion resistance of epoxy fairing compounds. Curing to an off-white color, this 5.5oz USA-made filler is a must-have for professionals seeking flawless, durable finishes in woodworking and marine applications.

## Description

Get On The Water

Review: Great filler from west system A++++++
Review: This stuff works great!! It’s not easy to mix into the epoxy, it’s so insanely light, it just floats away if you’re not very very careful!! Add a little at a time, mix inside a garage or somewhere the wind can’t get to the mixing bowl. Once it’s mixed in, it does a great job thickening up the epoxy. Great for vertical surfaces as it really holds upright well once mixed to the proper thickness.

## 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.

## Images

![406-7 Collodial Silica 5.5oz, off-white - Image 1](https://m.media-amazon.com/images/I/71fv2TtXOvL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***S on 5 December 2025*

Great filler from west system A++++++

### ⭐⭐⭐⭐⭐ Review
*by M***. on 1 May 2023*

This stuff works great!! It’s not easy to mix into the epoxy, it’s so insanely light, it just floats away if you’re not very very careful!! Add a little at a time, mix inside a garage or somewhere the wind can’t get to the mixing bowl. Once it’s mixed in, it does a great job thickening up the epoxy. Great for vertical surfaces as it really holds upright well once mixed to the proper thickness.

### ⭐⭐⭐⭐⭐ Review
*by M***E on 20 March 2024*

Works well for fairing, very strong

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**Shop now:** [https://www.desertcart.fi/products/526842393-406-7-collodial-silica-5-5oz-off-white](https://www.desertcart.fi/products/526842393-406-7-collodial-silica-5-5oz-off-white)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-09*