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H-450 Alumbond 6.5 oz Aluminum Putty Repair Kit

4.4 4.4 out of 5 stars 1,169 ratings

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Putty Repair Kit

Purchase options and add-ons

Brand HY-POXY
Material Resin
Compatible Material Metal
Item Form Putty
Color Grey

About this item

  • 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

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$29.86 ($4.59/Ounce)
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$7.92 ($3.96/Ounce)
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$83.11
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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Package Dimensions ‏ : ‎ 6.4 x 2.9 x 1.4 inches; 7.04 ounces
  • Item model number ‏ : ‎ H-450
  • Date First Available ‏ : ‎ February 4, 2009
  • Manufacturer ‏ : ‎ HY-POXY
  • ASIN ‏ : ‎ B001RMITIA
  • Country of Origin ‏ : ‎ USA
  • Customer Reviews:
    4.4 4.4 out of 5 stars 1,169 ratings

Product Description

Aluminum Putty Repair Kit. A Two Component Epoxy Formulation Highly Filled With Carefully Selected Pure Aluminum Particles, Modified Curing Agents, And Special High Quality Additives To Provide Maximum Strength, Durability, And Ease Of Application. Because Exact Amounts Of Resin And Hardener Can Be Dispensed From Each Tube, The H-450 Eliminates Waste And Is Ideal For Smaller Repairs. The Easy To Use H-450 Fits Comfortably Into Any Tool Box And Is Extremely Popular With Hvac Tradesmen, Plumbers And Auto Mechanics. Alumbond Is Especially Formulated For Repairing Hvac Pipes, Tanks, Valves, Pumps, Castings, Water Jackets, Radiators, Etc., Where Non-Rusting, Non-Magnetic Aluminum Finish Is Desired.


From the manufacturer

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About Us

Hypoxy Systems’ Management has a combined experience of more than 70 years in the formulation, manufacturing and worldwide marketing of epoxy materials. Although basic epoxies have been used for many years, Hy-Poxy represents the new “State of the Art” in formulas, raw materials and methods of compounding. Our easy-to-use, two-component specially formulated epoxies harden without heat, pressure or special tools. Simply mix and apply!

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Customer reviews

4.4 out of 5 stars
4.4 out of 5
1,169 global ratings

Customers say

Customers like the performance, quality and ease of use of the bonding adhesive. For example, they mention it works well, is strong and easy to work with. Some appreciate the leakage, ease of mixing, and value. That said, some complain about the sturdiness, saying it breaks easily and doesn't harden. Opinions are mixed on durability.

AI-generated from the text of customer reviews

56 customers mention45 positive11 negative

Customers like the performance of the bonding adhesive. They say it works well, is easy to mix and apply, and is seaworthy.

"bond perfect to aluminum heads for my car. prefect fix work great, THANK!." Read more

"...ONE LET IT CURE AND GOT MY ENGINE BACK TOGETHER IK CAN SAY BIKE IS RUNNING GREAT AND NO ISSUES JUST LIKE NEW AND NEVER USE JB WELD ON ALUMINUM USE..." Read more

"...A little alcohol around the holes and some Alumbond, FIXED! They work like new...." Read more

"This stuff is great and would buy again." Read more

42 customers mention42 positive0 negative

Customers are satisfied with the quality of the bonding adhesive. They mention that it is strong, holds well, and has good tensile strength. The epoxy is resistant to shear and tension forces, and it easily withstands the torque load. The product has a good working life and hardens nicely.

"...Seems to be VERY strong. Un-sanded, the product is smooth, shiny and a medium grey...." Read more

"...I’ve had it outside for several days and it seems to be holding up fine. I’m happy!" Read more

"bond perfect to aluminum heads for my car. prefect fix work great, THANK!." Read more

"...The epoxy appeared strong and I used a piece of aluminum to also overlap the crack but this is just too much for this epoxy. It failed immediately...." Read more

18 customers mention18 positive0 negative

Customers find the bonding adhesive fairly easy to use. They mention that it mixes well, goes on smoothly, and is messy at first. However, some say that it's easy to drill and thread, and that it cures rock hard.

"messy but easy..." Read more

"...Mixing and application were very easy." Read more

"...It held for several hours of use and is pretty easy to apply after buffing the surface of the block.Cons:..." Read more

"Fairly easy to use, doesn’t set up right away so I had time to work with it but that also means It flows like thick honey so I put on three “layers”...." Read more

11 customers mention8 positive3 negative

Customers like the bonding adhesives for its ability to prevent leakage. They mention that it works great and does not leak oil anymore.

"...Sanded it down smooth the next day and had the tire remounted. NO LEAKS!..." Read more

"...Hasent leaked yet. It's been 2 days. If it changes I'll repost if it dont then assume it worked well." Read more

"...No more leaks and now it's sea worthy!" Read more

"...The boiler developed a leak at the bottom of the heat exchanger, looks like the gasket material between the two plates failed...." Read more

5 customers mention5 positive0 negative

Customers find the bonding adhesive easy to mix and apply. They mention it works great and is easy to handle.

"...The picture shows an 3/4 inch long blow out an this product allowed me to mix an apply without removing that whole line.(2010 ford flex) the coolant..." Read more

"It mixes very well, it goes on smoothly. I love this product. One of the best I have ever found." Read more

"...It was easy to mix and apply. It seemed to bond well, it sanded well, and seems to be holding paint just fine...." Read more

"The product mixes well, and is easy to handle. There's a generous amount of working time so you don't have to hurry...." Read more

5 customers mention5 positive0 negative

Customers appreciate the value of the bonding adhesive. They say it's worth the money, cheaper than welding, and just as strong.

"...Definitely recommend this stuff cost a little more but totally worth it!" Read more

"Nice product" Read more

"Works well. Worth the cost?..." Read more

"Worth the money..." Read more

14 customers mention9 positive5 negative

Customers are mixed about the durability of the bonding adhesive. Some mention that it's fantastic when repairing an aluminum pontoon, perfect for aluminum repairs, and the best stuff for ac line repair. However, others say that it doesn't cure right, takes nearly 24 hours to cure, and doesn' t set.

"I had a knock sensor head on my LS1 block break. This stuff repaired it really well." Read more

"...running, used tape to keep product in the crack, then it took nearly 24 hours to cure here in Arizona with an average day time temp...." Read more

"Used to repair a crack in zero turn hydrostatic transmission. Cured nicely. I'll update after I see how the repair holds up." Read more

"...Adhesion is great and was able to rebuild those flanges, and redrill them for bolts...." Read more

12 customers mention3 positive9 negative

Customers are dissatisfied with the sturdiness of the bonding adhesive. They mention that it breaks off easily, is not very strong, and doesn't harden and hold. Some say that the product never hardened after 48 hours on the boat or on the board they mixed it on. That said, some say that it works well for patching small cracks and for repairing hairline fractures.

"...the bottom of the heat exchanger, looks like the gasket material between the two plates failed...." Read more

"Had some hairline fractures on my boat’s transom assembly. This sealed most of it...." Read more

"...Not too runny and not stiff where it makes it spreading difficult...." Read more

"Patching small crack in pontoon boat" Read more

Life saver
5 Stars
Life saver
This product really saved me a huge headache. I repaired 2 puncture's in the aluminium coolant lines from the vehicle sitting for a few years. the previous owner didnt drain the straight water out of the lines before the first winter hit MI.. The picture shows an 3/4 inch long blow out an this product allowed me to mix an apply without removing that whole line.(2010 ford flex) the coolant line ran from the front to the rear heater core. Will have to see how many years it lasts but so far i couldnt be happier
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Top reviews from the United States

Reviewed in the United States on April 15, 2020
Style: Putty Repair KitVerified Purchase
12 people found this helpful
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Reviewed in the United States on May 1, 2021
Style: Putty Repair KitVerified Purchase
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Ko
5.0 out of 5 stars Works perfectly for my modified aluminum radiator fan tabs
Reviewed in the United States on May 1, 2021
I have a 04 Maxima and they don't exactly make an aftermarket aluminum radiator fan mount.

I did however grab specs off Mishimoto's website to compare my radiator to a 350z which is essentially the same engine but different placement in the engine bay.

So I grabbed an aluminum radiator support for a 350z and cut off the original tabs and used this Hy-Poxy H-450 to reattach tabs at the correct location to fit my 04 Maxima mounting points.

I used scrap cardboard and takeout chopsticks to mix the two parts together and surprisingly it spread very easily. Not too runny and not stiff where it makes it spreading difficult. I did have to let it sit overnight to fully cure and the next morning once I removed my clamps it was rock hard.

Key tips are to make sure to wipe down the area with ISO alcohol before applying. Scuffing the aluminum with a stiff wire brush or coarse sandpaper will help with bonding.

If you also use wax paper under the project you're working on it'll help from sticking to your work area.

I opted for this since I tried to use aluminum brazing rods with a digital temp gun and MAP gas and it quickly went downhill once I got the parts to 700 degrees.
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13 people found this helpful
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Reviewed in the United States on February 12, 2024
Style: Putty Repair KitVerified Purchase
Reviewed in the United States on February 10, 2024
Style: Putty Repair KitVerified Purchase
Reviewed in the United States on November 2, 2023
Style: Putty Repair KitVerified Purchase
One person found this helpful
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Reviewed in the United States on March 27, 2023
Style: Putty Repair KitVerified Purchase
9 people found this helpful
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Reviewed in the United States on November 25, 2023
Style: Putty Repair KitVerified Purchase
Customer image
5.0 out of 5 stars Life saver
Reviewed in the United States on November 25, 2023
This product really saved me a huge headache. I repaired 2 puncture's in the aluminium coolant lines from the vehicle sitting for a few years. the previous owner didnt drain the straight water out of the lines before the first winter hit MI.. The picture shows an 3/4 inch long blow out an this product allowed me to mix an apply without removing that whole line.(2010 ford flex) the coolant line ran from the front to the rear heater core. Will have to see how many years it lasts but so far i couldnt be happier
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Customer imageCustomer image
Reviewed in the United States on October 3, 2016
Style: Putty Repair KitVerified Purchase
One person found this helpful
Report