Is cabosil hs5 equivalent to cabosil m5?

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.

can this be mixed with bondo to thicken?

Yes this can thicken bondo. Just be careful because if you add to much your bondo will be dry.

Is this hydrophobic or hydrophyllic?

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

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Fasco Epoxies Cabosil Smoked Silica Thickener in Quart Tin

Fasco Epoxies Cabosil Smoked Silica Thickener in Quart Tin

Product ID: 642698921

Details

Brand
Fasco Epoxies
Item form
Liquid
Material
ABS
Special features
Thixotropic
Specific uses for product
Craft Repair

🌊Hydrophilic surface improves powder flow

⚖️Sub-micron particle size for precision

🛠️Boosts hardness & tensile strength

Description

⚡ Elevate your epoxy game with the ultimate viscosity master!

TRUSTED BY PROS - 4.6⭐ from 799 reviews—industry favorite for crafts, repairs, and coatings
REINFORCE ELEVATE - Amplify silicone & organic rubber durability with superior hardness and stretch
EFFORTLESS POWDER HANDLING - Hydrophilic surface slashes tilt angle, ensuring seamless powder flow
UNMATCHED FLOW STABILITY - Say goodbye to sagging—smooth, high-strength blends every time
PRECISION THIXOTROPIC CONTROL - Master viscosity with sub-micron smoked silica for flawless epoxy mixes

Fasco Epoxies Cabosil Smoked Silica Thickener is a premium thixotropic agent designed to enhance viscosity and flow control in epoxy and polyester systems. Featuring sub-micron particles and a hydrophilic surface, it improves powder flow, reinforces silicone and organic rubbers, and boosts hardness, tensile strength, and stretch. Ideal for professional crafts, repairs, and coatings, it delivers smooth, non-sagging, high-strength mixes trusted by hundreds of users.

Specifications

ASIN	B074Y6V7QT
Brand	Fasco Epoxies
Brand Name	Fasco Epoxies
Color	Gray
Colour	Gray
Compatible Material	Epoxy Resin, Paint, Silicone
Container Type	Bottle
Customer Reviews	4.6 out of 5 stars 811 Reviews
Global Trade Identification Number	00819794020756
Item Form	Powder
Item Package Quantity	1
Item form	Powder
Manufacturer	Fasco Epoxies Inc.
Material	ABS
Material Type	ABS
Model	FIL01Q
Other Special Features of the Product	Thixotropic
Part Number	FIL01Q
Special features	Thixotropic
Specific Uses For Product	Craft, Repair, Woodworking, Furniture, Wood, Table Top Coating
Specific uses for product	Craft, Repair, Woodworking, Furniture, Wood, Table Top Coating
UPC	819794020756
Viscosity Level	High
Volume	1 Quarts
Water Resistance Level	Not Water Resistant

Reviews

F**X

Good product and worked well for me

Worked to thicken my gelcoat as promised this is the second time I bought it, works really good thickening my gelcoat

2.08.2026

L**I

Exactly what I needed

Great product. Great price

23.07.2026

C**I

Nice smooth, strong finish

Excellent for resin! Nice smooth finish! Highly recommended for thickening resin.

26.02.2026

A**R

Works!

25.06.2025

B**S

Good product

Works great

31.05.2026

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