---
product_id: 69559867
title: "Fasco Epoxies - Fasco Cab-O-SIL Fumed Silica thickener in Quart tub"
brand: "fasco epoxies"
price: "$36.17"
currency: USD
in_stock: true
category: "Fasco Epoxies"
url: https://www.desertcart.us/products/69559867-fasco-epoxies-fasco-cab-o-sil-fumed-silica-thickener-in
store_origin: US
region: United States of America
---

# Enhances adhesive strength & stability Boosts viscosity for non-sagging liquids Lightweight hydrophilic silica powder Fasco Epoxies - Fasco Cab-O-SIL Fumed Silica thickener in Quart tub

**Brand:** fasco epoxies
**Price:** $36.17
**Availability:** ✅ In Stock

## Summary

> 🛠️ Elevate your craft with the secret thickener pros swear by!

## Quick Answers

- **What is this?** Fasco Epoxies - Fasco Cab-O-SIL Fumed Silica thickener in Quart tub by fasco epoxies
- **How much does it cost?** $36.17 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/69559867-fasco-epoxies-fasco-cab-o-sil-fumed-silica-thickener-in)

## 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

- • **Superior Adhesion Boost:** Strengthens gel coats, polyester, and ceramic blankets for durable, long-lasting results.
- • **Trusted Industry Standard:** Top-rated by pros with 4.6 stars and a leading rank in household paint additives—don’t get left behind.
- • **Ultra-Lightweight Formula:** Hydrophilic fumed silica ensures easy mixing without adding bulk—perfect for professional-grade finishes.
- • **Precision Thickening Power:** Transforms epoxy, silicone, and paints with unmatched viscosity control for flawless application.
- • **Multi-Material Compatibility:** Seamlessly blends with epoxy resin, varnishes, and fillers to prevent sagging and reinforce strength.

## Overview

Fasco Cab-O-SIL Fumed Silica is a premium hydrophilic thickening powder designed to enhance viscosity and adhesion in epoxy, silicone, paints, and varnishes. Its lightweight, thixotropic formula prevents sagging and strengthens coatings, making it a must-have for professional-grade repairs, woodworking, and finishing projects.

## Description

desertcart.com: Fasco Epoxies - Fasco Cab-O-SIL Fumed Silica thickener in Quart tub : Tools & Home Improvement

## Features

- Cabosil – Also called fumed silica, it is a hydrophilic silica powder, a lightweight material that is easy to use and can be added to any application
- Thickener - Thickening powder for epoxy, silicone, paints, varnishes, and liquids significantly increases the viscosity of the liquid and produces a non-sagging property.
- Strong Adhesive - Fumed silica has strong stability, making it easy to strengthen gel coat, epoxy, polyester, paint and so on. It is also used to make ceramic blanket rigidizer.
- Multi Usage – Cabosil is suitable for thickening epoxy resin. Additionally, it is suitable for rubber reinforcement, and can also be combined with fillers or fibers to prevent them from sagging.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B074Y6V7QT |
| Best Sellers Rank | #15,208 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in Household Paint Additives |
| Brand Name | Fasco Epoxies |
| Color | Clear |
| Compatible Material | Epoxy Resin, Paint, Silicone |
| Container Type | Pail |
| Customer Reviews | 4.6 4.6 out of 5 stars (842) |
| Global Trade Identification Number | 00819794020756 |
| Item Form | Powder |
| Item Package Quantity | 1 |
| Manufacturer | Fasco Epoxies Inc. |
| Material Type | Silicon Dioxide (Silica) |
| Model | FIL01Q |
| Other Special Features of the Product | Thixotropic |
| Part Number | FIL01Q |
| Specific Uses For Product | Craft, Repair, Woodworking, Furniture, Wood, Table Top Coating |
| UPC | 819794020756 |
| Unit Count | 128.0 Fluid Ounces |
| Viscosity Level | High |
| Volume | 1 Quarts |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** Fasco Epoxies
- **Item Form:** Powder
- **Material:** Silicon Dioxide (Silica)
- **Special Feature:** Thixotropic
- **Specific Uses For Product:** Craft, Repair, Woodworking, Furniture, Wood, Table Top Coating

## Images

![Fasco Epoxies - Fasco Cab-O-SIL Fumed Silica thickener in Quart tub - Image 1](https://m.media-amazon.com/images/I/61fWIw8bQwL.jpg)

## Questions & Answers

**Q: How should I dispose of it safely?**
A: In the container it came in

**Q: Is cabosil hs5 equivalent to cabosil m5?**
A: Works good, you just have to keep adding a little at a time to your pre mixed resin/hardener mix until you get the right consistency for your job.
Be sure to wear a good dust mask as this stuff is feather light & will blow all over, it weighs nothing.

**Q: can this be mixed with bondo to thicken?**
A: Yes this can thicken bondo. Just be careful because if you add to much your bondo will be dry.

**Q: Is this hydrophobic or hydrophyllic?**
A: CAB-O-SIL M-5 is widely used to provide thickening, thixotrophic (shearthinning), and anti-settling behavior in liquid systems. M-5 is most efficient in non-polar to medium polarity systems. M-5 offers the best balance of thickening efficiency and dispersibility

## Frequently Bought Together

- Fasco Epoxies - Fasco Cab-O-SIL Fumed Silica thickener in Quart tub
- TotalBoat 5:1 Marine Epoxy Resin Kit for Bonding, Filleting, Coating, and Laminating - Use for Fiberglass, Wood, Carbon Fiber, Boat Building, Repairs, Woodworking (Quart, Slow Hardener, Pumps)
- TotalBoat-14409 Marine Gelcoat for Boat Building, Repair and Composite Coatings (White, Quart with Wax)

---

## 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/69559867-fasco-epoxies-fasco-cab-o-sil-fumed-silica-thickener-in](https://www.desertcart.us/products/69559867-fasco-epoxies-fasco-cab-o-sil-fumed-silica-thickener-in)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-21*