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What is the World’s Strongest Adhesive?

Strong Adhesive and_Glues
Many people might think of the brand names Super GlueTM or Krazy GlueTM as the strongest glue in the world. Those glues are actually a class or type of adhesives called cyanoacrylates, also known as instant glues. Remember that commercial of a man dangling from a metal bar with his hard hat attached to it?

If you’re looking for glue or an adhesive product in a strength-to-volume perspective, then cyanoacrylates probably do supply the strongest bond compared to other adhesives and they are very resistant to most chemicals, water and mild heat.

However, the downfall is that they are not flexible so any amount of bending, expanding or contracting, they become brittle and break.
 

Strong,_Flexible,_Waterproof,_Heat-resistant_Adhesives
Others may think that two-part epoxies are the strongest adhesives because they are strong, flexible, waterproof and resistant to heat, cold and chemical exposure.
 

They are high-performance adhesives used in the construction of aircraft, automobiles and boats, and they can be developed to suit almost any application for wood, metal, glass, fiberglass, stone, and some plastics.
 

While these adhesives provide high adhesion, low shrinkage and high fatigue resistant, the downside is it requires a lot of surface preparation, have a long cure time and can have a low peel strength.

Then some people may think of Gorilla GlueTM. This type of "strong glue" is a polyurethane adhesive that, like two-part epoxies, can bond to a variety of substrates, is resistant to water, heat and cold, and can be used for a variety of purposes. It’s faster setting than epoxy adhesives yet expands after it is applies, and, unlike epoxies, can be sandable, paintable and stainable. Polyurethane adhesives, however, generally do not have as high “lap shear strength” as epoxies. This lap shear strength is a measure of an adhesive’s ability to endure the force applied to bonded substrates that get pulled in opposite directions.

There are other adhesives out there that are considered the “strongest” but only relative to the application. For example, there are chemical adhesives that actually chemically bond two surfaces becoming as strong as the substrate they are applied to.
 

There is even a bacteria that can attach to solid surfaces which is the strongest glue known to exist in nature but only develops in the presence of water.

So, in the end, being the strongest glue really depends on what you put the adhesive on, what the intended use is for, and how it is applied. Hence, it’s all relative. If you want to learn more about the available types of adhesives perfect for your adhesive applications. Feel free to contact HAR Adhesive Technologies today at 440-486-7185 or follow the links below to find a local adhesive representative in your state.

Lynette Filson, Communications Manager
harnetinfo@haradhesive.com

We invite readers to use the links below to find and contact a local adhesives representative that can help with your company's industrial adhesives needs. HAR Adhesive Technologies has a presence in seven distinct states, uniquely focused on serving the adhesives, adhesive application, and equipment needs of each region in the following U.S. states: OhioIndianaKentuckyMichiganNew YorkPennsylvaniaWest Virginia

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Montayj says:


April 3, 2020 7:46 PM

Such a pointless article.
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curt bizovi says:


April 6, 2020 2:27 PM

Ok, good stuff
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John says:


April 20, 2020 4:43 PM

After reading the article I still have no clue as to what adhesive is the strongest. This article is pointless as it does not answer the question.
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60.

John Houston says:


June 22, 2020 4:39 AM

Gorilla glues are the most overpriced, overrated and overhyped (advertising $$$) glues ever. They've essentially packaged a couple ounces of common polyurethane adhesive usually used to fill cracks from cheap pump tubes and charge $10.00 a bottle for it. Stick with epoxy or silicones. Don't get scammed.
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Seal man says:


August 10, 2020 12:54 PM

Great post !
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62.

Dennis Thut says:


August 21, 2020 9:45 AM

Why are none of the modern glues as strong as the original super glue? I am old enough to remember when it first came out. Without preparation or cleaning it would stick anything with an unbreakable bond, almost instantly. Though I have searched high and low I always find modern glues to be pathetic and disappointing. Where can I get the original stuff from ?
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September 23, 2020 8:39 AM

This adhesive is really strong like its name. Suitable for any type of season.
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great says:


October 31, 2020 6:31 AM

65.
November 5, 2020 8:12 AM

my teacher also taught us about this. really informative article. thanks for this
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November 11, 2020 7:14 PM

great post.
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gta game says:


November 11, 2020 7:15 PM

very good post.
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November 11, 2020 7:15 PM

amazing post.
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zuma game says:


November 11, 2020 7:16 PM

great work.
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clash games says:


November 11, 2020 7:16 PM

very good post.
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71.

Jeff says:


December 1, 2020 11:43 PM

This is helpful but we need a little more. PSI or MPa tensile. After decades in the body shop the differentiation of brittle/ flexible and load vector anisotropic qualities is important, but we need more .
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December 15, 2020 10:02 AM

I am happy to find so many useful information here in the post
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