--- product_id: 5819004 title: "West System 406-2 Colloidal Silica 1.7 oz" brand: "west system" price: "S/.155" currency: PEN in_stock: true reviews_count: 8 category: "West System" url: https://www.desertcart.pe/products/5819004-west-system-406-2-colloidal-silica-1-7-oz store_origin: PE region: Peru --- # Enhanced strength & abrasion resistance Precision viscosity control Superior epoxy thickening West System 406-2 Colloidal Silica 1.7 oz **Brand:** west system **Price:** S/.155 **Availability:** ✅ In Stock ## Summary > 🛠️ Elevate your epoxy game—thicken, strengthen, and perfect every project! ## Quick Answers - **What is this?** West System 406-2 Colloidal Silica 1.7 oz by west system - **How much does it cost?** S/.155 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/5819004-west-system-406-2-colloidal-silica-1-7-oz) ## 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 - • **Clean, Off-White Finish:** Cures to a neat, off-white color for a polished, professional look. - • **Rock-Solid Reinforcement:** Boost your epoxy’s strength and durability for professional-grade repairs. - • **Trusted Industry Standard:** Backed by West System’s legacy of premium epoxy solutions since 2001. - • **Smooth Consistency Every Time:** Achieve perfect fairing compounds with unmatched uniformity. - • **Runway-Ready Viscosity Control:** Say goodbye to epoxy drips with flawless vertical and overhead application. ## Overview West System 406-2 Colloidal Silica is a premium epoxy thickening additive designed to control viscosity, prevent runoff on vertical and overhead surfaces, and enhance the strength and abrasion resistance of epoxy fairing compounds. It cures to a clean off-white finish, making it ideal for professional vehicle repairs and specialty applications. ## Description West System 406-2 Colloidal Silica 1.7 oz Review: West System awesomeness - I’ve dealt with a couple of epoxy brands over the years and West System’s is by far the best all around system that includes both epoxy and fillers. These fillers are a bit pricy when you factor in the weight or volume but they work just like fillers should. I have yet to encounter any negative issues with these fillers, and they all appear to be packaged in a professional environment. The fillers come bone dry and don’t have any impurities in them. Review: Amazing Product - Used it to add to gelcoat during a crack repair on our boat and it is amazing. ALWAYS USE A RESPIRATOR!!! This is a very fine dust and it will damage your lungs. ## 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 | B0000AY1OC | | Best Sellers Rank | #21,119 in Automotive ( See Top 100 in Automotive ) #97 in Care Corrosion & Rust Inhibitors #1,030 in Oils & Fluids | | Date First Available | October 1, 2001 | | Department | unisex-adult | | Is Discontinued By Manufacturer | No | | Item Weight | 5 ounces | | Item model number | 406-2 | | Manufacturer | Gougeon Brothers, Inc. | | Product Dimensions | 23 x 15 x 8 inches | ## Images ![West System 406-2 Colloidal Silica 1.7 oz - Image 1](https://m.media-amazon.com/images/I/61B9MCaAKPL.jpg) ## Questions & Answers **Q: Does the resin remain clear after this is added? (Some of the other filler additives say that they cure red/brown.)** A: If using west system epoxy 205 or 206 hardener resin is redish or purple. The filler is white and turns into a tranlucent opaque of color of resin. NO RESIN WILL NOT REMAIN CLEAR. ## Customer Reviews ### ⭐⭐⭐⭐⭐ West System awesomeness *by G***Y on February 2, 2024* I’ve dealt with a couple of epoxy brands over the years and West System’s is by far the best all around system that includes both epoxy and fillers. These fillers are a bit pricy when you factor in the weight or volume but they work just like fillers should. I have yet to encounter any negative issues with these fillers, and they all appear to be packaged in a professional environment. The fillers come bone dry and don’t have any impurities in them. ### ⭐⭐⭐⭐⭐ Amazing Product *by N***E on July 15, 2023* Used it to add to gelcoat during a crack repair on our boat and it is amazing. ALWAYS USE A RESPIRATOR!!! This is a very fine dust and it will damage your lungs. ### ⭐⭐⭐⭐⭐ Works great as an epoxy thickener *by J***D on April 9, 2024* I mixed some of this colloidal silica with a 2 part epoxy glue to thicken it up. The more you add the thicker the glue mixture gets. The powder is super light, and floats everywhere, so a mask is not a bad idea. Handle it slowly and carefully. ## Frequently Bought Together - West System 406-2 Colloidal Silica 1.7 oz - TotalBoat-14409 Marine Gelcoat for Boat Building, Repair and Composite Coatings (White, Quart with Wax) - Wax Additive - 4 oz Surfacing Agent for use with Gelcoat and Polyester resins --- ## 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.pe/products/5819004-west-system-406-2-colloidal-silica-1-7-oz](https://www.desertcart.pe/products/5819004-west-system-406-2-colloidal-silica-1-7-oz) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-04-23*