---
product_id: 5397949
title: "406-7 Collodial Silica 5.5oz, off-white"
brand: "west system"
price: "₪276"
currency: ILS
in_stock: true
reviews_count: 8
category: "West System"
url: https://www.desertcart.co.il/products/5397949-406-7-collodial-silica-5-5oz-off-white
store_origin: IL
region: Israel
---

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

**Brand:** west system
**Price:** ₪276
**Availability:** ✅ In Stock

## Summary

> 🛠️ Elevate your epoxy game — because your projects deserve precision and power!

## Quick Answers

- **What is this?** 406-7 Collodial Silica 5.5oz, off-white by west system
- **How much does it cost?** ₪276 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/5397949-406-7-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

- • **Trusted by Pros:** Top-rated with 4.9 stars and a cult following in marine & industrial circles
- • **Strength That Lasts:** Reinforce your fairing compounds for unbeatable durability 🛡️
- • **Seamless Consistency:** Achieve smooth, professional-grade finishes every time
- • **Runoff? Not on Your Watch:** Stay flawless on vertical and overhead joints 🧗‍♂️
- • **Precision Viscosity Control:** Master your epoxy flow with surgical accuracy ⚖️

## Overview

West System 406-7 Colloidal Silica is a high-performance epoxy thickening additive designed to precisely control viscosity, prevent runoff on challenging vertical and overhead surfaces, and enhance the strength and abrasion resistance of epoxy fairing compounds. This off-white liquid filler cures in 24 hours, is water-resistant, and is highly rated by professionals for delivering consistent, durable results in marine and industrial applications.

## Description

West System 406-7 Collodial Silica 5.5oz, off-white: Automotive Adhesives And Sealants: desertcart.com: Industrial & Scientific

Review: Great stuff…not easy to work with, BE CAREFUL and go slow!! - 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: Works well for fairings - Works well for fairing, very strong

## 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 | #50,768 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #61 in Tile Epoxy Adhesives |
| Brand | West System |
| Brand Name | West System |
| Color | off-white |
| Compatible Material | Fiberglass |
| Container Type | Can |
| Customer Reviews | 4.9 out of 5 stars 86 Reviews |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00811343011505 |
| Included Components | FILLER COLLOIDAL SILICA 5.5 OZ |
| Item Form | Liquid |
| Item Height | 11.25 inches |
| 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 |
| UPC | 811343011505 783847056576 |
| Unit Count | 5.5 Ounce |
| Viscosity | High |
| Volume | 5.5 Fluid Ounces |
| Warranty Description | Limited Warranty |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** West System
- **Material:** Resin
- **Item Form:** Liquid
- **Color:** off-white
- **Item Package Quantity:** 1

## Images

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

## Available Options

This product comes in different **Size** options.

## Customer Reviews

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

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

Works well for fairing, very strong

### ⭐⭐⭐⭐⭐ Home run for my rustic wood flooring project, allowing me to fill large holes that unthickened epoxy would have run through
*by T***U on May 11, 2016*

I used this to thicken the epoxy so it wouldn't run down through large cracks and nail holes in a rustic oak floor. Unthickened, the epoxy would disappear as quickly as I could inject it. This is a great system. It's very easy to mix this in until you get the desired thickness. I spread it on with a stick, smashing it down into the holes.

## Frequently Bought Together

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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.il/products/5397949-406-7-collodial-silica-5-5oz-off-white](https://www.desertcart.co.il/products/5397949-406-7-collodial-silica-5-5oz-off-white)

---

*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-02-15*