--- product_id: 5397949 title: "West System 406-7 Colloidal Silica Epoxy Filler, 5.5 oz | Thickens Epoxy" brand: "west system" price: "RM299" currency: MYR in_stock: true reviews_count: 9 category: "West System" url: https://www.desertcart.com.my/products/5397949-west-system-406-7-colloidal-silica-epoxy-filler-5-5 store_origin: MY region: Malaysia --- # Thickens epoxy for perfect viscosity 5.5 oz precise dosing Prevents runoff on vertical surfaces West System 406-7 Colloidal Silica Epoxy Filler, 5.5 oz | Thickens Epoxy **Brand:** west system **Price:** RM299 **Availability:** ✅ In Stock ## Summary > 🛠️ Elevate your epoxy game—thicker, stronger, flawless 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?** RM299 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/5397949-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:** Stay confident on vertical and overhead surfaces with zero sagging. - • **Creamy Off-White Finish:** Achieve a smooth, stable paste that blends seamlessly with your epoxy. - • **Master Your Epoxy Viscosity:** Control thickness effortlessly for flawless application every time. - • **Made for WEST SYSTEM Epoxies:** Optimized compatibility ensures no compromise on cure or strength. - • **Boost Fairing Compound Strength:** Enhance durability and abrasion resistance where it counts. ## Overview West System 406-7 Colloidal Silica is a premium 5.5 oz epoxy thickening additive designed to control viscosity, prevent runoff on challenging surfaces, and enhance the strength and consistency of fairing compounds. Made in the USA and fully compatible with WEST SYSTEM epoxy resins, it cures to a creamy off-white paste ideal for professional-grade structural and finishing applications. ## Description West System 406-7 Colloidal Silica Epoxy Filler, 5.5 oz | Thickens Epoxy | Control epoxy viscosity for reliable gluing and coating results and easier application with this thickening additive.: Automotive Adhesives And Sealants: desertcart.com: Industrial & Scientific Review: Good quality product - Worked exactly as expected and mixed well for my project. Reliable product and easy to use. 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. ## 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 | #37,871 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #53 in Tile Epoxy Adhesives | | Brand | West System | | Brand Name | West System | | Color | off-white | | Compatible Material | Fiberglass | | Container Type | Can | | Customer Reviews | 5.0 out of 5 stars 111 Reviews | | 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 | | Material | Resin | | 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 | | Part Number | 406-7 | | 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 Level | High | | Volume | 5.5 fluid ounces | | Warranty Description | Limited Warranty | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** West System - **Color:** off-white - **Item Form:** Liquid - **Material:** Colloidal Silica ## Images ![West System 406-7 Colloidal Silica Epoxy Filler, 5.5 oz | Thickens Epoxy - Image 1](https://m.media-amazon.com/images/I/71fv2TtXOvL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good quality product *by B***E on May 11, 2026* Worked exactly as expected and mixed well for my project. Reliable product and easy to use. ### ⭐⭐⭐⭐⭐ Great stuff…not easy to work with, BE CAREFUL and go slow!! *by M***L 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. ### ⭐⭐⭐⭐⭐ Versatile thickener for West Systems epoxy *by E***N on April 18, 2026* I’ve used West Systems for probably 50 years. After the initial learning curve, it’s hard to use anything else. I use 406 on a majority of my glue joints. Measure it out into cut-down McDonalds cups using a gram scale for as little as 6 grams or for how many grams your container can hold. It makes a self-filling, durable joint in so many applications. Add as much 406 to epoxy for the thickness you need to make super strong joints. ## 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.com.my/products/5397949-west-system-406-7-colloidal-silica-epoxy-filler-5-5](https://www.desertcart.com.my/products/5397949-west-system-406-7-colloidal-silica-epoxy-filler-5-5) --- *Product available on Desertcart Malaysia* *Store origin: MY* *Last updated: 2026-10-21*