--- product_id: 178572913 title: "Fasco Epoxies White Glass Microspheres - Filler for Epoxy and Polyester Resin Gallon" brand: "fasco epoxies" price: "$137.73" currency: USD in_stock: true reviews_count: 8 category: "Fasco Epoxies" url: https://www.desertcart.us/products/178572913-fasco-epoxies-white-glass-microspheres-filler-for-epoxy-and-polyester store_origin: US region: United States of America --- # Engineered hollow glass microspheres Improves weight-to-strength ratio Easy sanding & fairing compound Fasco Epoxies White Glass Microspheres - Filler for Epoxy and Polyester Resin Gallon **Brand:** fasco epoxies **Price:** $137.73 **Availability:** ✅ In Stock ## Summary > ⚡️ Elevate your resin game with featherweight strength and flawless finishes! ## Quick Answers - **What is this?** Fasco Epoxies White Glass Microspheres - Filler for Epoxy and Polyester Resin Gallon by fasco epoxies - **How much does it cost?** $137.73 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/178572913-fasco-epoxies-white-glass-microspheres-filler-for-epoxy-and-polyester) ## Best For - fasco epoxies enthusiasts ## Why This Product - Trusted fasco epoxies brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Lightweight Strength Boost:** Enhance your epoxy or polyester resin with hollow glass microspheres for superior strength without the bulk. - • **Effortless Sanding & Shaping:** Create smooth, easy-to-sand fairing compounds that cut down prep time and elevate finish quality. - • **Long-Lasting Shelf Stability:** Never worry about expiration—these dry microspheres stay ready for years, ensuring your projects never pause. - • **Customizable Putty Perfection:** Mix with cabosil in equal parts to craft a versatile, general-purpose putty tailored to your repair needs. - • **Durable, User-Friendly Packaging:** Robust gallon jug designed for easy pouring, storage, and repeated use in busy workshops. ## Overview Fasco Epoxies White Glass Microspheres are engineered hollow glass beads designed to be mixed with epoxy or polyester resins, creating lightweight, easy-to-sand fillers that improve weight-to-strength ratio and dimensional stability. Packaged in a durable gallon jug, these microspheres offer long shelf life and compatibility with composite materials, making them an essential upgrade for professional-grade repairs and fairing applications. ## Description Micro cellular hollow fiberglass particles for adding to resin as a filler reinforcement for easy to sand lightweight filling. White in color. Sometimes called Glass Bubbles or Glass Microspheres. Review: This is one of those products you didn't know you needed. - Microspheres, microbaloons, glass bubbles, whatever you call them, they are a great way to create your own fairing material with the epoxy or resin you already have on the shelf. I read questions about what to use to for non-structural repairs, and fairing over rough surfaces on FB groups every week. There are always dozens of pre-made filler suggestions. Yet another product to sit on your shelf and expire when you inevitably don't use all of it. . These microspheres never expire. They will be ready to go in 10 days, or 10 years. If you are doing composite work, you already have half of what you need to make your own 100% compatible with your work filler. These microspheres are the other half. Because you use, your epoxy or resin, there is no problems with incompatible materials. . You will need a respirator, and don't mix them anywhere there can't be a mess, because microspheres are so fine, just scooping them out and mixing will send a small cloud of them airborne. . Fasco has not disappointed, there are no clumps, the product is bone dry, and the reusable container is simple and will survive being tossed around the shop. Once cured, they sand easy, reducing labor hours, and helping you spend less time with prep, and more time enjoying your work. . The price is spot on, and even if it was $5 more than the competition, I would buy these. Review: Great for boat building. - Works as advertised. ## Features - Sands Easy Added to epoxy or polyester to make a lightweight fairing compound - Also Called Glass Bubbles - Easy to Pour and Store Gallon Jug - Microspheres Improves the Weight to Strength Ratio Improves Dimensional Stability - When added with our cabosil (equal parts by volume) it makes a great general purpose putty - Engineered hollow glass microspheres ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07KP95L9W | | Best Sellers Rank | #227,093 in Automotive ( See Top 100 in Automotive ) #147 in Body Repair Putty #1,981 in Body Repair Tools | | Brand | Fasco Epoxies | | Brand Name | Fasco Epoxies | | Color | White | | Compatible Material | Fiberglass, Glass | | Container Type | Jug | | Customer Reviews | 4.2 out of 5 stars 20 Reviews | | Item Form | Beads | | Item Package Quantity | 1 | | Manufacturer | Fasco Epoxies Inc. | | Material | Sodium Potassium Aluminum Silicate | | Material Type | Sodium Potassium Aluminum Silicate | | Other Special Features of the Product | Improves Weight to Strength Ratio, Improves Dimensional Stability | | Part Number | FIL02G | | Special Feature | Improves Weight to Strength Ratio, Improves Dimensional Stability | | Specific Uses For Product | Repair, Wall Repair | | UPC | 819794020787 | | Unit Count | 128 Fluid Ounces | | Viscosity Level | Low | | Volume | 128 Fluid Ounces | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** Fasco Epoxies - **Item Form:** Beads - **Material:** Sodium Potassium Aluminum Silicate - **Special Feature:** Improves Weight to Strength Ratio, Improves Dimensional Stability - **Specific Uses For Product:** Repair, Wall Repair ## Images ![Fasco Epoxies White Glass Microspheres - Filler for Epoxy and Polyester Resin Gallon - Image 1](https://m.media-amazon.com/images/I/61s83MVUVVL.jpg) ![Fasco Epoxies White Glass Microspheres - Filler for Epoxy and Polyester Resin Gallon - Image 2](https://m.media-amazon.com/images/I/91ICI6KbdWL.jpg) ![Fasco Epoxies White Glass Microspheres - Filler for Epoxy and Polyester Resin Gallon - Image 3](https://m.media-amazon.com/images/I/81kayIy2hVL.jpg) ## Questions & Answers **Q: What is the micron size of the spheres, for purposes of selecting PPE filters?** A: Probably ANY PPE mask or filter will be adequate, but I still use a vacuum to pull the dust away while mixing **Q: What ratio, with or W/out Cabosil, can be added to resins before compromise of cohesion?** A: Depends entirely on the resin system, application technique, vacuum pull, cloth. Micro by itself has little cohesion value. I use Cabo and cotton flox for bonding structure **Q: Does this 'Wet Out & Cure' translucent/transparent, as does most fiberglass cloth, or will it remain white opaque causing clouding of final product?** A: Yes, it will definitely cloud the appearance ## Customer Reviews ### ⭐⭐⭐⭐⭐ This is one of those products you didn't know you needed. *by T***Y on September 19, 2024* Microspheres, microbaloons, glass bubbles, whatever you call them, they are a great way to create your own fairing material with the epoxy or resin you already have on the shelf. I read questions about what to use to for non-structural repairs, and fairing over rough surfaces on FB groups every week. There are always dozens of pre-made filler suggestions. Yet another product to sit on your shelf and expire when you inevitably don't use all of it. . These microspheres never expire. They will be ready to go in 10 days, or 10 years. If you are doing composite work, you already have half of what you need to make your own 100% compatible with your work filler. These microspheres are the other half. Because you use, your epoxy or resin, there is no problems with incompatible materials. . You will need a respirator, and don't mix them anywhere there can't be a mess, because microspheres are so fine, just scooping them out and mixing will send a small cloud of them airborne. . Fasco has not disappointed, there are no clumps, the product is bone dry, and the reusable container is simple and will survive being tossed around the shop. Once cured, they sand easy, reducing labor hours, and helping you spend less time with prep, and more time enjoying your work. . The price is spot on, and even if it was $5 more than the competition, I would buy these. ### ⭐⭐⭐⭐⭐ Great for boat building. *by B***F on July 15, 2025* Works as advertised. ### ⭐ Not structurally strong becomes like gooey glob *by S***E on January 17, 2026* Seems to be made out of paper, not structurally strong ## Frequently Bought Together - White Glass Microspheres - Filler for Epoxy and Polyester Resin Gallon - Fasco Epoxies Cabosil - Fumed Silica Thickener in Gallon Tub - Fasco Epoxies White Glass Microspheres - Filler for Epoxy and Polyester Resin - Quart Tub --- ## 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.us/products/178572913-fasco-epoxies-white-glass-microspheres-filler-for-epoxy-and-polyester](https://www.desertcart.us/products/178572913-fasco-epoxies-white-glass-microspheres-filler-for-epoxy-and-polyester) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-12*