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
PC Products PC-7 Epoxy Adhesive Paste, Two-Part Heavy Duty, 1lb in Two Cans, Charcoal Gray 167779
  • Two-part multipurpose epoxy adhesive paste works as a bonding agent, sealant, and filler for a range of indoor and outdoor applications
  • Bonds many materials, including fiberglass, wood, concrete, many metals, brick, glass, ceramic, and rubber
  • Seals oil, gas, and water tank leaks, as well as plumbing and masonry cracks
  • Fills holes, castings, and molds
  • Application temperature range is 35 to 115 degrees F, and service temperature range is -20 to +200 degrees F
SaleBestseller No. 2
STAR BRITE 2 Pack Epoxy Aluminum Putty Stick Permanent Emergency Repairs 87004
  • Easy to use; just hand knead for 1 minute and apply to damaged area.
  • Can be sanded, drilled and tapped
  • Makes permanent and emergency repairs on aluminum boats, outdrives, fuel and water tanks and other aluminum parts.
Bestseller No. 3
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
Eastwood Epoxy Primer Sealer Activator Quart 1:1 | Epoxy Sealant for Steel, Fibreglass, Aluminium, Car Body Filler, Car Restoration | Anti Corrosion Underseal, Rust Proofing, Automotive
  • EPOXY PRIMER ACTIVATOR: The Eastwood Epoxy Primer Activator for epoxy primers, this mixes 1:1 with Epoxy Primers 50242ZP. Perfect as a sealant for a wide range of materials steel, fiberglass, car body filler, aluminium and much more. Especially effective for metal rust corrosion prevention.
  • AMAZING ADHESION: Made here in the USA our Epoxy Primer Activator comes in a convenient 32 Fl Oz size, and when mixed with our Epoxy Primer 50242ZP typically you'll only need 1 or 2 medium wet coats to achieve a strong 1mm dry film thickness. Suitable to be wet sanded the next day, and dry sanded after 2 to 3 days.
  • EASTWOOD QUALITY: Eastwood offers solutions which combines our 4,000+ unique products with the know-how to “Do The Job Right”. With an In-house product design, development and testing and a strong track record of high-quality, innovative products. Used and trusted by top builders to beginners and also provides a Lifetime Tech Support.
  • SAFETY INFORMATION: Always wear eye, skin and respiratory protection when applying this product.Use in a well ventilated area away from open flame. Store spray in a cool dry place. Warning: This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.
  • WARRANTY: Comes with a 90-day limited warranty and 90 day return.
Bestseller No. 5
Diamond Aluminium Mica Pigment Powder (Epoxy,Resin,Soap,Plastidip) Black Diamond Pigments 51g/1.8oz in a 4oz container.
  • 💎 Non-toxic Mica Powdered Pigment - DIAMOND ALUMINIUM is made by fusing our pigment 'ALUMINIUM' and our Diamond Effect pigment together with a touch or pearl to create an amazing DIAMOND ALUMINIUM that catches your eye every time light hits it.
  • 💎 (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.

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 2023-09-24 / Affiliate links / Images from Amazon Product Advertising API