---
product_id: 526842393
title: "West System 406-7 Collodial Silica 5.5oz, off-white"
brand: "west system"
price: "$264"
currency: NZD
in_stock: false
reviews_count: 5
category: "West System"
url: https://www.desertcart.nz/products/526842393-west-system-406-7-collodial-silica-5-5oz-off-white
store_origin: NZ
region: New Zealand
---

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

**Brand:** west system
**Price:** $264
**Availability:** ❌ Out of Stock

## Summary

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

## Quick Answers

- **What is this?** West System 406-7 Collodial Silica 5.5oz, off-white by west system
- **How much does it cost?** $264 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/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

- • **Enhanced Durability:** Reinforce your projects with superior strength and abrasion resistance.
- • **Precision Viscosity Control:** Master epoxy flow for flawless application every time.
- • **Vertical & Overhead Mastery:** No more drips or runs—perfect for challenging angles.
- • **Seamless Fairing Consistency:** Achieve smooth, professional-grade finishes effortlessly.
- • **Trusted Marine-Grade Quality:** West System reliability trusted by pros since 2012.

## 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 marine-grade filler is ideal for woodworking and professional repairs, delivering consistent, durable results trusted by experts since 2012.

## 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005150RUW |
| Best Sellers Rank | #190,873 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #992 in Epoxy Adhesives |
| Brand | WEST SYSTEM |
| Colour | off-white |
| Country of Origin | USA |
| Customer Reviews | 4.9 4.9 out of 5 stars (80) |
| Date First Available | 9 August 2012 |
| Full Cure Time | 24 Hours |
| Generic Name | MARINE ACCESSORIES |
| Global Trade Identification Number | 00811343011505 |
| Included Components | FILLER COLLOIDAL SILICA 5.5 OZ |
| Item Dimensions LxWxH | 53.3 x 40.6 x 28.6 Centimeters |
| Item Form | Liquid |
| Item Height | 11.25 Inches |
| Item Package Quantity | 1 |
| Item Volume | 5.5 Fluid Ounces |
| Item Weight | 156 g |
| Item Width | 16 Inches |
| Item model number | 406-7 |
| Manufacturer | WEST SYSTEM |
| Material | Colloidal Silica |
| Model number | 406-7 |
| Net Quantity | 5.5 Grams |
| Number of Memory Sticks | 1 |
| Number of Pieces | 1 |
| Package Information | Bottle |
| Product Dimensions | 53.34 x 40.64 x 28.58 cm; 155.92 g |
| Special Feature | Controllable viscosity, Prevention of epoxy runoff, Improved strength and consistency of fairing compounds |
| Specific Uses For Product | Woodworking |
| UPC | 811343011505 783847056576 |
| Viscosity | High |
| Viscosity Level | High |
| 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

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

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

### ⭐⭐⭐⭐⭐ Review
*by M***L 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

## 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.nz/products/526842393-west-system-406-7-collodial-silica-5-5oz-off-white](https://www.desertcart.nz/products/526842393-west-system-406-7-collodial-silica-5-5oz-off-white)

---

*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-02*