---
product_id: 526842393
title: "West System 406-7 Collodial Silica 5.5oz, off-white"
brand: "west system"
price: "HK$1159"
currency: HKD
in_stock: false
reviews_count: 5
category: "West System"
url: https://www.desertcart.hk/products/526842393-west-system-406-7-collodial-silica-5-5oz-off-white
store_origin: HK
region: Hong Kong
---

# Precise viscosity control Prevents epoxy runoff on vertical/overhead surfaces Enhances epoxy strength & abrasion resistance West System 406-7 Collodial Silica 5.5oz, off-white

**Brand:** west system
**Price:** HK$1159
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Elevate your epoxy game—because every detail counts!

## Quick Answers

- **What is this?** West System 406-7 Collodial Silica 5.5oz, off-white by west system
- **How much does it cost?** HK$1159 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/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

- • **Built for Strength:** Boosts epoxy toughness and abrasion resistance for lasting results
- • **Master Your Epoxy Flow:** Control viscosity like a pro to avoid drips and runs
- • **Marine-Grade Reliability:** Trusted by pros for water-resistant, durable finishes
- • **Consistent Fairing Perfection:** Achieve smooth, uniform epoxy fairings every time
- • **Flawless Vertical & Overhead Application:** No more messy drips—perfect for complex joints

## Overview

West System 406-7 Colloidal Silica is a high-viscosity epoxy additive designed to precisely control epoxy flow, prevent runoff on challenging surfaces, and enhance the strength and abrasion resistance of fairing compounds. Curing to an off-white color, it’s ideal for woodworking and marine applications requiring durable, water-resistant finishes.

## 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 | #190,894 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #992 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 80 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***L 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.hk/products/526842393-west-system-406-7-collodial-silica-5-5oz-off-white](https://www.desertcart.hk/products/526842393-west-system-406-7-collodial-silica-5-5oz-off-white)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-03*