--- product_id: 5397949 title: "406-7 Collodial Silica 5.5oz, off-white" brand: "west system" price: "€ 91.51" currency: EUR in_stock: true reviews_count: 9 category: "West System" url: https://www.desertcart.gr/products/5397949-406-7-collodial-silica-5-5oz-off-white store_origin: GR region: Greece --- # Enhances epoxy strength Precise viscosity control Prevents epoxy runoff 406-7 Collodial Silica 5.5oz, off-white **Brand:** west system **Price:** € 91.51 **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?** € 91.51 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/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 - • **Built to Last:** Boosts strength and abrasion resistance, making your epoxy fairings tougher than ever. - • **Master Your Mix:** Control epoxy thickness with surgical precision for flawless vertical and overhead applications. - • **Stay Put Formula:** Prevents annoying epoxy drips and runoffs, ensuring clean, professional finishes every time. - • **Off-White Elegance:** Cures to a subtle off-white shade, blending seamlessly with fiberglass and marine surfaces. - • **Seamless Consistency:** Transforms your epoxy into a smooth, easy-to-work-with compound that flows just right. ## Overview West System 406-7 Colloidal Silica is a high-viscosity epoxy thickening additive designed to prevent runoff on vertical and overhead surfaces. It enhances the strength, abrasion resistance, and consistency of epoxy fairing compounds, curing to an off-white color. Ideal for professional-grade fiberglass and marine applications, it offers precise viscosity control and water resistance, ensuring durable, clean, and flawless finishes. ## 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 | #37,176 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #52 in Tile Epoxy Adhesives | | Brand Name | West System | | Color | off-white | | Compatible Material | Fiberglass | | Container Type | Can | | Customer Reviews | 4.9 4.9 out of 5 stars (88) | | 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 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 | | 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 - **Color:** off-white - **Item Form:** Liquid - **Material:** Colloidal Silica ## 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***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. ### ⭐⭐⭐⭐⭐ 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.gr/products/5397949-406-7-collodial-silica-5-5oz-off-white](https://www.desertcart.gr/products/5397949-406-7-collodial-silica-5-5oz-off-white) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-04-24*