10 Best Epoxy For Aluminums 2020

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

After analyzing products, scanning reviews, spending more than 36 hours of research and speaking with our test users, we think the MASTERCOOL 90934 Alum Bond A/C Repair Epoxy is the one of the Best Epoxy For Aluminum on the market.

MASTERCOOL 90934 Alum Bond A/C Repair Epoxy – Best Overall Epoxy For Aluminum

MASTERCOOL 90934 Alum Bond A/C Repair Epoxy
  • Hardness (Shore, ASTM D 1706): 83D
  • Coefficient of Thermal Expansion: 40 x 10-6 cm/cm/ DegreeC
  • Compression Strength (ASTM D 695): 8600 PSI (59 M Pa)
  • Tensile Strength (ASTM D 638): 3500 PSI (24 M Pa)
  • Maximum Line Pressure (after 5 hours application time): 650 PSI

J-B Weld 8272 MarineWeld Marine Epoxy – Best under $50

J-B Weld 8272 MarineWeld Marine Epoxy
  • J-B WELD MARINEWELD: A two-part epoxy cold weld system that provides strong, lasting repairs to multiple surfaces. Perfect for all DIY marine and watercraft repairs.
  • CURE AND SET TIME: After mixing the tubes at a 1:1 ratio, it takes 4-6 hours to set and 16-24 hours to cure. Once cured J-B Weld MarineWeld can be tapped, filled, sanded, molded and drilled. J-B Weld MarineWeld's set and cure color is dark grey.
  • VERSATILE AND DEPENDABLE: J-B Weld MarineWeld 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, MarineWeld is waterproof and resistant to petroleum, chemical and acid. It retains strength above & below water.
  • SURFACE APPLICATIONS: Aluminum, Fiberglass, Metal, Plastic/Composite, Wood.
  • 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.

Hy-Poxy H-450 Alumbond 6.5 oz Aluminum Putty Repair Kit

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

Devcon 10610 Aluminum Putty (F)

Devcon 10610 Aluminum Putty (F)
  • ADHESIVES SEALANTS & TAPES
  • Country of Manufacturer: United States
  • Manufacturer: DEVCON

Star Brite 4oz Epoxy Putty Stick

Star Brite 4oz Epoxy Putty Stick
  • Works underwater! Every boater should have this onboard for emergency and permanant repairs
  • Easy to use - hand knead for 1 minute and apply to damaged area
  • Bonds in 5-10 minutes - Steel hard in 30 minutes Fully cured in 60 minutes and can then be sanded, drilled and tapped
  • Special additives cut through oxidation and anodization to maximize bonding to weathered aluminum
  • Withstands high temperatures and pressures making it ideal for manifolds, mufflers, & drive units

Permatex 84109 PermaPoxy 4 Minute Multi-Metal Epoxy – Best Budget Epoxy For Aluminum

Permatex 84109 PermaPoxy 4 Minute Multi-Metal Epoxy
  • Versatile, easy-to-use, multi-metal dark grey epoxy adhesive that eliminates the need for welding or brazing
  • Water and solvent resistant epoxy sets in 4 minutes with no clamping needed; permanent strength up to 4500 PSI
  • Fills gaps and will not shrink; when cured can be drilled, sanded, threaded or filed
  • Temperature Range: -60°F to 300°F (-51°C to 149°C)
  • Suggested Applications: Ideal for complex, multi-piece assemblies; bonds rigid materials including aluminum, brass, chrome, copper, iron, stainless steel, and steel; use to seal welded seams, fill metal cracks, and mount metal components

PC Products 167779 PC-7 Two-Part Heavy Duty Multipurpose Epoxy Adhesive

PC Products 167779 PC-7 Two-Part Heavy Duty Multipurpose Epoxy Adhesive
  • 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
  • PC-7 formulation provides extended working time, for large and critical jobs, which allow the user to reposition work or make changes.
  • High "wet grab" or tack of PC-7 Paste Epoxy makes overhead and sidewall work easy, without drip or sag.
  • PC-7 demonstrates excellent chemical resistance to mild acids, caustics, detergents, gasoline, fuel oil, salt and fresh water.
  • Note: PC-7 will not bond to wax paper, Teflon, Polyethylene and some other plastics. Test a small area when in doubt.

Hy-Poxy H-455 Alumfast 6.5 oz Rapid Cure Aluminum Putty Repair

Hy-Poxy H-455 Alumfast 6.5 oz Rapid Cure Aluminum Putty Repair
  • 5 minute Aluminum repair kit
  • Repairs HVAC, radiators, engine blocks, boat hulls, equipment
  • High stength industrial and automotive repair
  • Aluminum filled epoxy putty for quick and strong non rusting repairs
  • Made in the USA

J-B Weld 8276 KwikWeld Quick Setting Steel Reinforced Epoxy

J-B Weld 8276 KwikWeld Quick Setting Steel Reinforced Epoxy
  • JB KWIKWELD: Is a fast setting version of The Original J-B Weld two-part epoxy cold weld system that provides strong, lasting repairs to metal and multiple other surface types.
  • COUNT ON US: For more than 40 years, our products have earned a loyal following from people who take pride in their work. With each product we innovate, we continue to provide the world's strongest bond for your projects.
  • SIMPLE TO USE: After mixing, it forms a permanent bond and can be shaped, tapped, filed, sanded and drilled after curing. It has a 1:1 mixing ratio, sets in 6 minutes and is fully cured in 4-6 hours.
  • VERSATILE & DEPENDABLE: Ideal for automotive, plumbing, marine repairs, crafts, and more. It is rated at a tensile strength of 2424 PSI and will withstand temperatures up to 300ºF.
  • DO IT YOURSELF: Big or small, you can DIY it with J-B. Our heavy duty adhesives repair & restore it right the first time. JB Weld delivers the legendary performance of the World's Strongest Bond.

Marine-Tex RM330K Gluvit Waterproof Epoxy Sealer – Premium Pick

Marine-Tex RM330K Gluvit Waterproof Epoxy Sealer
  • Gluvit barrier coat seals and protects hulls and decks
  • Provides superior protection for fiberglass, wood, aluminum, and steel
  • Seals leaky seams and rivets in aluminum hulls, and leaks around fiberglass cabins or decks
  • Hard protective coating flexes with hull movements to bridge and seal hairline cracks
  • Fills minor cracks and pinholes

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