---
product_id: 526842393
title: "West System 406-7 Collodial Silica 5.5oz, off-white"
brand: "west system"
price: "$445.71"
currency: USD
in_stock: false
reviews_count: 5
url: https://www.desertcart.ec/products/526842393-west-system-406-7-collodial-silica-5-5oz-off-white
store_origin: EC
region: Ecuador
---

# Boosts strength & abrasion resistance Precise viscosity control Prevents epoxy runoff West System 406-7 Collodial Silica 5.5oz, off-white

**Brand:** west system
**Price:** $445.71
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Elevate your epoxy game — flawless finishes, zero compromises!

## Quick Answers

- **What is this?** West System 406-7 Collodial Silica 5.5oz, off-white by west system
- **How much does it cost?** $445.71 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/526842393-west-system-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

- • **Off-White Elegance:** Cures to a subtle off-white, blending seamlessly with fiberglass and wood projects
- • **Trusted by Experts:** Highly rated with 4.9 stars, the go-to additive for serious marine and woodworking pros
- • **No More Drips or Runs:** Engineered to prevent epoxy runoff, ensuring clean, professional finishes every time
- • **Master Your Epoxy Flow:** Control viscosity like a pro for flawless vertical and overhead applications
- • **Strength Meets Consistency:** Enhances fairing compounds with superior strength and abrasion resistance

## Overview

West System 406-7 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. Curing to an off-white color, it’s ideal for marine, woodworking, and fiberglass applications, trusted by professionals for its reliability and superior performance.

## Description

Get On The Water

Review: West system the best
Review: Great stuff…not easy to work with, BE CAREFUL and go slow!!

## 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 | B005150RUW |
| Best Sellers Rank | #183,098 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #963 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 79 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 |

## Product Details

- **Brand:** WEST SYSTEM
- **Item Form:** Liquid
- **Material:** Colloidal Silica
- **Specific Uses For Product:** Woodworking

## Images

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ West system the best
*by A***S on 5 December 2025*



### ⭐⭐⭐⭐⭐ Great stuff…not easy to work with, BE CAREFUL and go slow!!
*by M***. on 1 May 2023*



### ⭐⭐⭐⭐⭐ Works well for fairings
*by M***E on 20 March 2024*



## Frequently Bought Together

- West System 406-7 Collodial Silica 5.5oz, off-white
- West System 105 Epoxy Resin (.98Gallon 10.3-Pounds)

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

---

*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-02*