3 Best Epoxy For Aluminum

Aluminum items are revered for their strength.

However, traditional tear and wear can cause them to break down, making them un-useful

But should this mean that this is the end of them? I don’t think so

I have found that with the right epoxy, any item is easily fixable.

Below I will take you through the three best epoxy for aluminum items.

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1. 3M Marine Adhesive Sealant 5200 (05203)

It’s the sealant I use whenever I need to conduct some repairs on the family boat.

It has been designed to withstand water without coming loose or breaking down.

Apart from boats, you can also use it with jet skis, kayaks, and other common marine vehicles.

Key Specifications

• Compatible with wood, fiberglass, and metal
• The container comes with three fluid-ounces
• Its full curing time is 48 hours


• Highly resistant to water
• Affordable
• Flexible when dry


• It takes 48 hours to dry and up to seven days to become fully cured
• It has a strong smell

Reason for Inclusion

DIY home improvements can take on various shapes.

Every once in a while, I found myself having to make repairs on jet skis and boats and need an adhesive that can withstand water contact.

2. Epoxy Paste

If I were to give an example of the best DIY two-component epoxy, this would be it. I have used it as a coat and as a patch with equal efficiency in the past.


I particularly like it because it quickly bonds with all surfaces, except for a few plastics.

Key Specifications

• Paintable
• It weighs 3.36 ounces, and each tube has 60.0 milliliters
• Suitable for molding, filling, sealing, and bonding


• Versatile
• Very strong
• Very short dry time
• Long work time


• It results in an ugly surface (you can always paint it out)
• You need to use it immediately you have mixed it up

Reasons for Inclusion

Things are constantly breaking in the home, and when they do, I need something strong to help fix them.

I found that I can use this epoxy paste to glue (see the best glue for plexiglass here) the aluminum base of a faucet spray to an aluminum sink. How handy is that!

3. MASTERCOOL 90934 Alum Bond A/C Repair Epoxy – 2 oz.

It’s the only epoxy on this list intended to bond with aluminum.

I use it for DIY tasks involving products such as radiators, tanks, water jackets, pumps, and valves.

The two-component epoxy is specially formulated using modified curing agents to guarantee durability and maximum strength.

Key Specifications

• 650 PSI maximum line pressure
• 3500 PSI tensile strength
• 8600 PSI compression strength
• 83D hardness shore


• Easy to use
• Specifically intended for use with aluminum products
• Can be drilled, threaded, and sanded after curing
• It doesn’t take long to cure fully


• Requires a clean surface which means I can’t use it on DIY automotive repairs or improvements on greasy surfaces
• More expensive than the other epoxy for aluminum on this list

Reasons for Inclusion

It doesn’t stick up and is perfect for fixing all aluminum items, from broken ac lines to fan housings.

Bestseller No. 1
51g/1.8oz"Aluminium" Mica Powder Pigment (Epoxy,Resin,Soap,Art) Black Diamond Pigments
  • 💎 Non-toxic Mica Powdered Pigment - ALUMINIUM is a smooth silver/grey that looks as incredible in person as it does in the photos.
  • 💎 (Use for 😀 plastics 😋 slime 😎 epoxy 💅🏼 nail polish 💕 automotive paint 💖 lacquer 😍 soap 😋 resins 🤗 fiberglass 😜 bath bombs 😲 lip stick 😱 lip balm 😳 latex 🤓 rubber 😇 screen printing 😻 candle making 🙉 cosmetics 🤠 blush 😲 crafts 😝 jewelry 👽 Plastidip 🤣 Halo EFX 🤔 lotions 😁 creams 😎 plastic resins 🙂 nail polish 😲 melt pour soap 😍 embossing 😇 wood and much more!) Do NOT use with concrete the color will not be the same as displayed.
  • 💎 51g/1.8oz (10-60 Microns) NON-TOXIC Highest Quality Mica, Titanium Dioxide - (51g/1.8oz by weight) 💎 1g of pigment per 1 - 5oz of epoxy. 25-50g of pigment per gallon of peelable paint. Please see pigment portion guide for help. All of these pigments are 10-60 microns. NON-TOXIC Highest Quality Mica, Titanium Dioxide - (Melting point 1200-1800°F) (pH : 6.0-9.0 4% H2O) BEST IF ADDED TO A CLEAR BASE LIQUID OVER A BLACK BASE FOR TRUE COLOR
  • 💎 Please search for Black Diamond Pigments for all of our other colors available on Amazon. Please contact us if you have any questions about the color before purchase. We pride ourselves with having the LOWEST PRICES, HIGHEST QUALITY and UNIQUE COLORS. We will beat ANYONES prices on the same product/quantity!
  • 💎 Clear SLIME can be transformed into truly unique slime by adding just a small amount of pigment. Place the pigment in the center of the slime and slowly fold the clear slime over onto the pigment repeatedly until the pigment is dispersed thoroughly in the slime. Here at BLACK DIAMOND PIGMENTS we are leading the industry in quality and customer service.
Bestseller No. 2
Star Brite Epoxy Aluminum Putty Stick Permanent Emergency Repairs 087004
  • Makes permanent and emergency repairs on aluminum boats, outdrives, fuel and water tanks and other aluminum parts.
  • Easy to use; just hand knead for 1 minute and apply to damaged area.
  • Can be sanded, drilled and tapped
Bestseller No. 4
Hy-Poxy H-450 Alumbond 6.5 oz Aluminum Putty Repair Kit
  • Epoxy metal weld for aluminum
  • Repairs HVAC, radiators, engine blocks, boat hulls, equipment, appliances
  • Can be drilled, tapped, sanded, threaded and painted
  • Gives you a non rusting, non magnetic aluminum gray color, stays gray even after sanding/polishing
  • Made in the USA
SaleBestseller No. 5
J-B Weld 8265S Original Cold-Weld Steel Reinforced Epoxy - 2 oz.
  • J-B WELD ORIGINAL: The Original Cold Weld two-part epoxy system that was designed as an alternative to torch welding. J-B Weld Original provides strong, lasting repairs to multiple surfaces and creates a bond stronger than steel. Perfect for DIY household, automotive, marine, craft repair and much more.
  • CURE AND SET TIME: After mixing the tubes at a 1:1 ratio, it takes 4-6 hours to set and 15-24 hours to cure. Once cured, J-B Weld Original can be tapped, filled, sanded, molded and drilled. J-B Weld Original’s set and cure color is dark grey.
  • VERSATILE & DEPENDABLE: J-B Weld Original is steel reinforced, has a tensile strength of 5020 PSI and can withstand temperatures up to 550 degrees Fahrenheit (287 degrees Celsius). When fully cured, J-B Weld Original is waterproof and resistant to petroleum, chemical and acid.
  • SURFACE APPLICATIONS: Metal, Plastic & PVC, Wood, Concrete, Ceramic & Tile and Fiberglass.
  • DO IT YOURSELF: Big or small, you can DIY it with J-B Weld. Our heavy duty epoxy and adhesives repair & restore it right the first time. J-B Weld delivers superior performance, quality, and results for the World’s Strongest Bond.

So, What’s The Best Epoxy for Aluminum?

The 3 best epoxy for aluminum is as follows :

  1. 3M Marine Adhesive Sealant 5200 (05203)
  2. Epoxy Paste
  3. MASTERCOOL 90934 Alum Bond A/C Repair Epoxy – 2 oz.

If I had to pick one from the three, it would be MASTERCOOL 90934 Alum Bond A/C Repair Epoxy – 2 oz.

While it’s a bit costly than the others, it’s the only epoxy designed for bonding with aluminum products.

Essentially, this means it will get the job done.

Last update on 2021-08-18 / Affiliate links / Images from Amazon Product Advertising API