---
product_id: 451479849
title: "Cabosil - Fumed Silica Thickener in Quart Tub"
brand: "fasco epoxies"
price: "632 kr"
currency: DKK
in_stock: true
reviews_count: 5
category: "Fasco Epoxies"
url: https://www.desertcart.dk/products/451479849-cabosil-fumed-silica-thickener-in-quart-tub
store_origin: DK
region: Denmark
---

# Medium viscosity for perfect flow control Sub-micron particle size for precision Reinforces silicone & organic rubbers Cabosil - Fumed Silica Thickener in Quart Tub

**Brand:** fasco epoxies
**Price:** 632 kr
**Availability:** ✅ In Stock

## Summary

> 🧪 Elevate your formulations with Cabosil — where science meets flawless flow!

## Quick Answers

- **What is this?** Cabosil - Fumed Silica Thickener in Quart Tub by fasco epoxies
- **How much does it cost?** 632 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/451479849-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

- • **Master Your Mix:** Transforms sticky powders into smooth, free-flowing blends for flawless application every time.
- • **Rubber Reinforcer:** Elevates hardness, tensile strength, and elongation in silicone and organic rubbers for durable results.
- • **Viscosity Virtuoso:** Boosts liquid epoxy and polyester viscosity with a thixotropic magic touch—no sag, no drip.
- • **Versatile Powerhouse:** Perfect for epoxy systems, fillers, fibers, and even fly floatant applications—be the pro who’s always prepared.
- • **Ultra-Pure Performance:** Hydrophilic, low bulk density fumed silica ensures consistent, high-purity formulations.

## Overview

Cabosil Fumed Silica Thickener is a premium, hydrophilic colloidal silica powder designed to enhance viscosity and flow in epoxy, polyester, and rubber systems. Its sub-micron particles and thixotropic properties ensure smooth, non-sagging mixtures while reinforcing silicone and organic rubbers with improved hardness and tensile strength. Packaged in a convenient 1-quart tub, it’s the go-to additive for professionals demanding precision and durability.

## 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: 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: Good stuff, as expected.

## 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 |
|---------------|-------|
| Brand | Fasco Epoxies |
| Specific Uses For Product | Epoxy Systems, Silicone Rubber, Organic Rubbers, Mixed Systems, Reinforcement, Viscosity Control, Non-Sagging Applications, Fly Floatant |
| Material | Silicon Dioxide (Silica) |
| Item Form | Powder |
| Special Feature | Thixotropic |
| Colour | Clear |
| Item Package Quantity | 1 |
| Package Information | Pail |
| Item Volume | 1 Quarts |
| Viscosity | medium |
| Viscosity Level | Medium |
| UPC | 819794020756 |
| Global Trade Identification Number | 00819794020756 |
| Manufacturer | Fasco Epoxies Inc. |
| Model number | FIL01Q |
| Number of Memory Sticks | 1 |
| Item Weight | 109 g |
| Product Dimensions | 10.16 x 10.16 x 15.24 cm; 109 g |
| Item model number | FIL01Q |
| Item Height | 6 Inches |
| Item Width | 4 Inches |
| Are batteries included? | No |

## Product Details

- **Brand:** Fasco Epoxies
- **Specific Uses For Product:** Epoxy Systems, Silicone Rubber, Organic Rubbers, Mixed Systems, Reinforcement, Viscosity Control, Non-Sagging Applications, Fly Floatant
- **Material:** Silicon Dioxide (Silica)
- **Item Form:** Powder
- **Special Feature:** Thixotropic

## Images

![Cabosil - 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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Review
*by C***N on 24 May 2025*

Works great to thicken epoxy resin without reducing it's strength significantly.

## Frequently Bought Together

- Fasco Epoxies - Fasco Cab-O-SIL Fumed Silica thickener in Quart tub
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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-06*