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Permatex 84109 PermaPoxy 4 Minute Multi-Metal Epoxy, 0.84 oz. , Grey

Q: Does this epoxy do well in heat? Specifically exhaust/muffler heat?

I used to heat to remove the epoxy when it didn't hold as well as I had hoped. I don't think this would work with a muffler.

Q: What material would be best to mix this on?

I use piece of cardboard. It works, though it’s a pain mixing it. Make sure u mix it well.

Q: will this fill pinholes in welding? I am looking for a product that will easily fill the little pinholes and look (and react) a lot like the steel

Great question. I think it could fill the pinholes, but am unsure if it will look like the steel. You may try painting over with matched color.

Q: Can it be used for a/c aluminum coils repair with 410A refrigerant?

No, It really doesn't work ona lot of items. We tried.

Product ID: 16074678

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Details

Brand
Permatex
Specific Uses For Product
Fleet and
Material
Epoxy Resin
Item Form
Paste
Color
Grey

💪4500 PSI permanent strength

⏱️4-minute fast set

🌡️-60°F to 300°F temp range

Frequently Bought Together

Permatex 84109 PermaPoxy 4 Minute Multi-Metal Epoxy, 0.84 oz. , Grey

Permatex 25909 Liquid Metal Filler, 3.5 oz.

J-B Weld 8267 SteelStik Steel Reinforced Epoxy Putty Stick - 2 oz.

Description

🔧 Fix it fast, fix it strong—epoxy that works as hard as you do!

UNMATCHED STRENGTH - Withstands up to 4500 PSI, delivering industrial-grade durability for metal repairs.
MULTI METAL MASTERY - Bonds aluminum, brass, steel, and more—your all-in-one metal adhesive solution.
RAPID 4 MINUTE CURE - Get back to work fast with no clamping needed—perfect for tight schedules.
GAP FILLING PRECISION - Fills cracks and gaps without shrinking; can be drilled, sanded, or threaded once cured.
WEATHERPROOF RESISTANT - Water and solvent resistant with a wide temperature tolerance for any environment.

Permatex 84109 PermaPoxy is a high-viscosity, multi-metal epoxy adhesive that sets in just 4 minutes without clamping. Offering permanent strength up to 4500 PSI and resistance to water and solvents, it fills gaps without shrinking and can be drilled or sanded once cured. Ideal for complex metal assemblies and repairs across a broad temperature range from -60°F to 300°F.

Specifications

Brand	Permatex
Specific Uses For Product	Fleet and plant maintenance.
Material	Epoxy Resin
Item Form	Paste
Color	Grey
Item Package Quantity	1
Package Information	Syringe
Item Volume	0.85 Fluid Ounces
Viscosity	High Viscosity
Full Cure Time	4 Hours
Water Resistance Level	Water Resistant
Tensile Strength	4500 Pounds Per Square Inch
Viscosity Level	High
UPC	686226841094
Number of Pieces	1
Global Trade Identification Number	00686226841094
Manufacturer	Permatex
Model	84109
Item Weight	2.4 ounces
Product Dimensions	1.13 x 3.81 x 8 inches
Item model number	84109
Is Discontinued By Manufacturer	No
Exterior	Painted
Manufacturer Part Number	84109
OEM Part Number	84109

Have a Question? See What Others Asked

Does this epoxy do well in heat? Specifically exhaust/muffler heat?

What material would be best to mix this on?

will this fill pinholes in welding? I am looking for a product that will easily fill the little pinholes and look (and react) a lot like the steel

Can it be used for a/c aluminum coils repair with 410A refrigerant?

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