---
product_id: 526842393
title: "West System 406-7 Colloidal Silica Epoxy Filler, 5.5 oz | Thickens Epoxy"
brand: "west system"
price: "₨48376"
currency: LKR
in_stock: true
category: "West System"
url: https://www.desertcart.lk/products/526842393-west-system-406-7-colloidal-silica-epoxy-filler-5-5
store_origin: LK
region: Sri Lanka
---

# Boosts strength & abrasion resistance Viscosity control precision Prevents epoxy runoff West System 406-7 Colloidal Silica Epoxy Filler, 5.5 oz | Thickens Epoxy

**Brand:** west system
**Price:** ₨48376
**Availability:** ✅ In Stock

## Summary

> 🛠️ Elevate your epoxy game — thick, strong, and drip-free every time!

## Quick Answers

- **What is this?** West System 406-7 Colloidal Silica Epoxy Filler, 5.5 oz | Thickens Epoxy by west system
- **How much does it cost?** ₨48376 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/526842393-west-system-406-7-colloidal-silica-epoxy-filler-5-5)

## 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

- • **No More Drips or Runs:** Engineered to prevent epoxy sagging on vertical and overhead surfaces.
- • **Master Your Epoxy Flow:** Precisely control viscosity for flawless application every time.
- • **Creamy Off-White Finish:** Cures to a stable, professional-looking paste ideal for structural tasks.
- • **Stronger, Smoother Fairings:** Enhances fairing compounds with superior strength and consistency.
- • **Seamless WEST SYSTEM Compatibility:** Optimized for use with WEST SYSTEM epoxy without compromising cure or strength.

## Overview

West System 406-7 Colloidal Silica is a premium USA-made epoxy thickening additive designed to control viscosity, prevent runoff, and enhance the strength and abrasion resistance of fairing compounds. Compatible with WEST SYSTEM epoxy resins, it cures to a creamy off-white paste ideal for precise, professional-grade woodworking and marine applications.

## Description

Get On The Water

## Features

- Epoxy thickening additive for viscosity control – WEST SYSTEM406 Colloidal Silica is a finely powdered Made in the USA additive used to thicken epoxy and control viscosity for improved handling in specific applications.
- Prevents epoxy runoff – Adding this colloidal silica to epoxy resin and hardener mixtures helps prevent runoff on vertical and overhead surfaces, improving material placement without sagging.
- Enhances fairing compound performance – This additive can be used to improve epoxy fairing compounds by increasing strength, consistency, and abrasion resistance where a thicker body is needed.
- Cures to a creamy off-white color – Mixed into epoxy, 406 colloidal silica produces a stable, creamy off-white paste suitable for fairing and other structural tasks.
- Compatible with WEST SYSTEMepoxy systems – Designed for use with WEST SYSTEMepoxy resins and hardeners, this additive helps customize handling without altering the fundamental cure or strength of the base epoxy.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005150RUW |
| Best Sellers Rank | #294,355 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,186 in Epoxy Adhesives |
| Brand Name | WEST SYSTEM |
| Colour | off-white |
| Compatible Material | Fibreglass |
| Container Type | Bottle |
| Customer Reviews | 5.0 5.0 out of 5 stars (93) |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00811343011505 |
| Included Components | FILLER COLLOIDAL SILICA 5.5 OZ |
| Item Form | Powder |
| Item Package Quantity | 1 |
| Item Type Name | MARINE ACCESSORIES |
| Item Weight | 5.5 Ounces |
| Manufacturer | WEST SYSTEM |
| Manufacturer Part Number | 406-7 |
| Material Type | Resin |
| Model | 406-7 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Controllable viscosity, Prevention of epoxy runoff, Improved strength and consistency of fairing compounds |
| Specific Uses For Product | Woodworking |
| UPC | 811343011505 783847056576 |
| Unit Count | 5.5 Grams |
| Volume | 5.5 Fluid Ounces |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** WEST SYSTEM
- **Item Form:** Powder
- **Material:** Resin
- **Specific Uses For Product:** Woodworking

## Images

![West System 406-7 Colloidal Silica Epoxy Filler, 5.5 oz | Thickens Epoxy - Image 1](https://m.media-amazon.com/images/I/31wak5gHKPL.jpg)
![West System 406-7 Colloidal Silica Epoxy Filler, 5.5 oz | Thickens Epoxy - Image 2](https://m.media-amazon.com/images/I/71fv2TtXOvL.jpg)

## 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.lk/products/526842393-west-system-406-7-colloidal-silica-epoxy-filler-5-5](https://www.desertcart.lk/products/526842393-west-system-406-7-colloidal-silica-epoxy-filler-5-5)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-10-09*