---
product_id: 394017174
title: "Cabosil - Fumed Silica Thickener in Quart Tub"
brand: "fasco epoxies"
price: "¥8307"
currency: JPY
in_stock: true
reviews_count: 5
category: "Fasco Epoxies"
url: https://www.desertcart.jp/products/394017174-cabosil-fumed-silica-thickener-in-quart-tub
store_origin: JP
region: Japan
---

# Significant viscosity boost in liquids Sub-micron particle size for precision Reinforces silicone & organic rubbers Cabosil - Fumed Silica Thickener in Quart Tub

**Brand:** fasco epoxies
**Price:** ¥8307
**Availability:** ✅ In Stock

## Summary

> 🧪 Elevate your epoxy game with Cabosil — the secret weapon for flawless flow and rock-solid strength!

## Quick Answers

- **What is this?** Cabosil - Fumed Silica Thickener in Quart Tub by fasco epoxies
- **How much does it cost?** ¥8307 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/394017174-cabosil-fumed-silica-thickener-in-quart-tub)

## 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

- • **Flow Like a Pro:** Reduces powder angle of repose for effortless mixing and smooth application
- • **Non-Sag, All Day:** Creates high-strength, non-sagging mixtures solo or combined with fillers and fibers
- • **Viscosity on Demand:** Transforms liquid epoxy and polyester systems with a powerful, controlled thickening effect
- • **Lightweight Powerhouse:** Low bulk density and hydrophilic surface ensure superior dispersion and performance
- • **Rubber Reinforcement Master:** Boosts hardness, tensile strength, and elongation in silicone and organic rubbers

## Overview

Cabosil is a premium fumed silica thickener designed to enhance viscosity and flow in epoxy, polyester, and rubber systems. Its sub-micron particles and hydrophilic surface improve powder flow and reinforce silicone and organic rubbers by increasing hardness and tensile properties. Ideal for professionals seeking precise control and superior performance in high-strength, non-sagging mixtures.

## Description

An excellent thixotropic agent which is used to control viscosity of mixed epoxy systems Can be used alone for a very smooth, non-sagging, high strength mixture or combined with fillers or fibers to make them non-sagging can also be used as fly floatant Also referred to as colloidal or fumed silica CAB-O-SIL M-5 fumed silica is a medium surface fumed silica which enables a significant increase in viscosity in liquid polyester or epoxy systems, free flow of high purity powders and reinforcement of silicone and organic rubbers. Aggregated structure Sub-micron particle size Low bulk density Hydrophilic surface

Review: Good product.
Review: Wish i could give this 11 stars, great epoxy thickener. Adds lots of structure and great price. Unless you are trying to 16ft boat worth of thick viscous paste, you'll never need more than a quart

## Features

- Hydrophilic surface
- When blended into sticky and poorly flowing powder systems, Cabosil reduces angle of repose and improves powder flow.
- Can be used for reinforcement of silicone rubber and can be used to reinforceorganic rubbers
- Imparts good increase in hardness, tensile and elongation. Imparts significant increase in viscosity in liquid systems
- Also referred to as colloidal or fumed silica

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B074Y6V7QT |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 91,893 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 114 in Lab Vacuum & Pump Equipment |
| Colour | Clear |
| Customer Reviews | 4.7 4.7 out of 5 stars (744) |
| Date First Available | 19 Aug. 2017 |
| Item model number | FIL01Q |
| Material Type(s) | Silicon Dioxide (Silica) |
| Product Dimensions | 10.16 x 10.16 x 15.24 cm; 109 g |

## Product Details

- **Brand:** Fasco Epoxies
- **Item form:** Liquid
- **Material:** Silicon Dioxide (Silica)
- **Special feature:** Thixotropic
- **Specific uses for product:** Craft, Repair, Woodworking, Furniture, Wood, Table Top Coating

## Images

![Cabosil - Fumed Silica Thickener in Quart Tub - Image 1](https://m.media-amazon.com/images/I/31E8mBh0McL.jpg)
![Cabosil - Fumed Silica Thickener in Quart Tub - Image 2](https://m.media-amazon.com/images/I/31PjRiYEAdL.jpg)
![Cabosil - Fumed Silica Thickener in Quart Tub - Image 3](https://m.media-amazon.com/images/I/41URJiyuDKL.jpg)
![Cabosil - Fumed Silica Thickener in Quart Tub - Image 4](https://m.media-amazon.com/images/I/41cyjQCGWHL.jpg)
![Cabosil - Fumed Silica Thickener in Quart Tub - Image 5](https://m.media-amazon.com/images/I/51CY5P5CXTL.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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***E on 11 January 2026*

Good product.

### ⭐⭐⭐⭐⭐ Review
*by G***R on 4 October 2025*

Wish i could give this 11 stars, great epoxy thickener. Adds lots of structure and great price. Unless you are trying to 16ft boat worth of thick viscous paste, you'll never need more than a quart

### ⭐⭐⭐⭐⭐ Review
*by B***. on 30 June 2025*

Good stuff, as expected.

## Frequently Bought Together

- Fasco Epoxies - Fasco Cab-O-SIL Fumed Silica thickener in Quart tub
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-28*