Strongest Adhesive
Strongest Adhesive: Which Adhesive is the Strongest?
Adiseal has been shown to be the strongest adhesive in an independent adhesive strength test. To find out what the strongest adhesive is, Ultimate Handyman carried out adhesive strength tests. Adiseal was found to be the strongest adhesive by far, over 3 times stronger than the nearest competitor and even too strong for the screws of the test rig.

Adhesive Strength Test
Ultimate Handyman conducted a series of independent adhesive strength tests to identify the strongest adhesive. To assess the strength of each adhesive being tested, Ultimate Handyman applied each product between hardwood and metal surfaces. He then left the products to be cured. Once cured, using a hydraulic ram to break each adhesive bond, the pressure was then measured at which point each product broke at.
The impressive Adiseal was easily the clear winner finishing over 3 times stronger than the nearest competitor. In fact it was too strong for even the screws of the test rig. The screws holding the test rig down started to rip out due to the pressure of the hydraulic ram before the phenomenal Adiseal adhesive broke, forcing the test on Adiseal to be abandoned.
Test results
When testing the bond strength between hardwood and metal, Adiseal withstood an astounding pressure of over 3123+ psi, while all other adhesives failed at 1115 psi or lower. The chart below highlights the superior performance of Adiseal in the adhesive strength test.

Best & strongest adhesive
Various manufacturers often make bold claims about their grab adhesive, proclaiming it to be the best, strongest adhesive, most flexible, or the best construction adhesive and sealant in the market. However, it is important to remember that only one product can truly hold the title of being the best and strongest construction adhesive. With a multitude of options claiming superiority, the most reliable approach is to subject them to independent testing in order to ascertain their actual performance and determine which one truly stands out.
Adiseal’s outstanding performance in the independent test is a testament to its exceptional quality and engineering. Its formulation combines high-strength bonding capabilities with exceptional durability, ensuring long-lasting and resilient bonds. Whether you’re tackling DIY projects or professional applications, Adiseal’s unmatched strength makes it the go-to adhesive for demanding bonding needs.
Strongest adhesive strength test results table
Product | Max pressure when adhesive bond broke (psi) |
Adiseal | 3123 + psi |
SupaBond | 1115 psi |
Tec 7 | 1016 psi |
HB42 | 942 psi |
Loctite PL Premium | 873 psi |
Gorilla Grab Adhesive | 862 psi |
Bond It PU18 | 582 psi |
Bond It Save Nails | 411 psi |
“That is actually unbelievable!”
Testimonials
Testimonials & some comments on the: Grab adhesive tests 2017, video on YouTube
- That Adiseal is phenomenal!
- That Adiseal is some stuff though, definitely need to get some of that bought!
- I instantly went looking for Adiseal!
- Need to get my hands on some of that to try out.
- Looks like a cracking product.
- Having used the two most expensive brands on numerous occasions, I’ll be trying out the others, especially the Adiseal.
- Adiseal certainly surprised me in this test!
- Fantastic tests. It’s unbelievable that Adiseal test with the hardwood.
Other adhesives not in this test
Throughout the years, Ultimate Handyman has conducted a range of independent tests, meticulously documenting the results on the Ultimate Handyman YouTube channel. These comprehensive tests have covered a wide array of products, including the previous formulation of Adiseal, as well as other brands like Soudal, Geocel, and C-Tec.
Adiseal vs CT1 – Which is the strongest adhesive?
Manufacturers frequently promote their construction adhesives and sealants as the best in the market, but it is crucial to examine the validity of these claims beyond mere marketing hype. Some manufacturers claim their product is 360% stronger without being able to back it up. Rather than making unsupported assertions, we prefer to substantiate our statement by showcasing how Adiseal outperforms CT1 adhesive and sealant. We encourage you to witness the tangible benefits of Adiseal over CT1 and let the results speak for themselves, ensuring an informed decision based on real-world comparisons.
Proof of claims
Adiseal stands out not only for its superior performance compared to both C-Tec CT1 sealant adhesive and BT1 sealant but also being lower priced than both CT1 and BT1. To provide you with comprehensive details and evidence of Adiseal’s excellence over CT1 and BT1, we kindly request that you send us an email to receive the test result data. As a testament to our confidence in Adiseal’s superiority to CT1, we are offering a free complimentary tube of Adiseal White 290ml to tradespeople in the UK. This exclusive opportunity allows you to personally experience and validate the exceptional performance of Adiseal when compared to CT1 and BT1. For further information about this offer, please visit our dedicated offer page. We believe that the most reliable way to determine the superiority of Adiseal over CT1 and BT1 is by testing it yourself, rather than relying solely on manufacturers’ marketing claims.
Is CT1 actually 360% stronger?
Some manufacturers often make exaggerated claims about their products, boasting about being “360% stronger” than competitors. However, it is important to question the validity of these bold assertions. Without supporting evidence, such claims can be dismissed as mere marketing hype.
In a previous independent adhesive strength test conducted by Ultimate Handyman, the test compared the old formulas of CT1 and Adiseal in a metal-to-metal adhesive strength test. The results showed that the old formula of CT1 broke at 148 psi, while the old formula of Adiseal broke at 201 psi. This test clearly demonstrated that even the old formula of Adiseal outperformed the old formula of CT1 in terms of strength. The new formula of Adiseal exhibited even greater strength, breaking at 245 psi in the metal-to-metal test. Furthermore, Adiseal achieved an astonishing 3123 + psi in the wood-to-metal test without breaking. These results solidify Adiseal’s position as the unrivaled strongest adhesive and sealant, as proven by independent testing. In contrast, the claim of CT1 being “360% stronger” lacks any substantiating evidence from the manufacturer.
In addition to its exceptional strength, Adiseal Ultra Clear surpasses CT1 clear sealant in terms of clarity. It maintains its transparency in water better than CT1 clear sealant and adhesive. If you require actual test results as proof, please feel free to contact us.
Why pay more for a brand name that fails to deliver on performance when you can choose Adiseal? We encourage you to separate the hype from reality and make an informed decision based on proven results.
Adiseal vs Gorilla Grab Adhesive
During the extensive tests conducted by Ultimate Handyman, Gorilla Grab Adhesive, manufactured by the makers of Gorilla Glue, underwent rigorous examination. In the metal-to-metal adhesive strength test, Gorilla Grab Adhesive broke at 166 psi, while Adiseal emerged as the unequivocal winner, breaking at an impressive 245 psi. This independent strength test clearly establishes Adiseal as the superior product in terms of strength when compared to Gorilla Grab Adhesive.
Moreover, in the wood-to-metal adhesive strength test, notable disparities were observed. Gorilla Grab Adhesive broke at 862 psi, whereas Adiseal surpassed this performance by reaching an astonishing 3123 psi without breaking. This independent wood-to-metal strength test unequivocally confirms Adiseal’s significantly greater strength compared to Gorilla Grab Adhesive.
Both in the metal-to-metal and wood-to-metal strength tests, Adiseal consistently demonstrated its superior strength when pitted against Gorilla Grab Adhesive. These independent tests provide concrete evidence and establish Adiseal as the ultimate choice for exceptional adhesive strength and unparalleled performance.
Adiseal vs Tec 7 sealant and adhesive
During the comprehensive examination conducted by Ultimate Handyman, Tec 7 Sealant and Adhesive were subjected to thorough testing. In the metal-to-metal adhesive strength test, Tec 7 broke at 165 psi, while Adiseal emerged as the clear winner, breaking at a higher strength of 245 psi. This independent strength test solidifies Adiseal’s position as the stronger adhesive compared to Tec 7.
Furthermore, in the wood-to-metal adhesive strength test, notable disparities were observed. Tec 7 broke at 1016 psi, whereas Adiseal exhibited exceptional strength by surpassing an impressive 3123 psi without breaking. This independent wood-to-metal strength test further reinforces Adiseal’s significant superiority over Tec 7.
Whether in the metal-to-metal or wood-to-metal strength tests, Adiseal consistently displayed its superiority over Tec 7. These independent tests confirm Adiseal as the preferred choice for outstanding adhesive strength and exceptional performance when compared to Tec 7.
Adiseal vs HB42 sealant and adhesive
The adhesive strength test conducted by Ultimate Handyman has conclusively shown that Adiseal surpasses HB42 sealant and adhesive in terms of performance. Adiseal emerged as the top performer in both the metal-to-metal and wood-to-metal strength tests. In the metal-to-metal test, HB42 broke at 184 psi, while Adiseal exhibited its superior strength by breaking at a higher level of 245 psi. Similarly, in the wood-to-metal test, HB42 broke at 942 psi, whereas Adiseal demonstrated exceptional strength by surpassing an impressive 3123 psi without breaking. These independent test results leave no doubt that Adiseal is significantly stronger than HB42.
Adiseal vs Loctite PL Premium
As part of the adhesive strength test conducted by Ultimate Handyman, PL Premium from Loctite was included for evaluation. The results of the test revealed that Adiseal outperformed PL Premium in both the metal-to-metal and wood-to-metal strength tests. In the metal-to-metal test, PL Premium broke at 202 psi, while Adiseal demonstrated its superior strength by breaking at a higher level of 245 psi. Similarly, in the wood-to-metal test, PL Premium broke at 873 psi, whereas Adiseal showcased exceptional strength by surpassing an impressive 3123 psi without breaking. These test results clearly indicate that Adiseal exhibits significantly greater strength than PL Premium from Loctite.
Metal to metal adhesive strength test – Adiseal Strongest Adhesive Again
Adiseal maintained its unrivaled strength and dominance in the metal-to-metal strength test carried out by Ultimate Handyman, further clarifyling its position as the undisputed strongest adhesive. With its consistently exceptional performance, Adiseal stands out as not just a good option but the ultimate choice for grab adhesive, surpassing its competitors by a significant margin.
Adiseal strongest adhesive will successfully stick the following items:
- Wood
- Glass
- Stone
- Ceramic
- Rubber
- Metal
- Synthetic Materials
- Leather
- Plastic
- Concrete
- Mirror
- Brick
- Masonry
- Polystyrene
- Roof felt
- Fiberglass
- Many other items

Different items stuck to a concrete block with Adiseal strongest adhesive.
Benefits of Adiseal
Data Sheets
Adiseal Colours Technical Data SheetDownload
Adiseal Ultra Clear Technical Data SheetDownload
MSDS Adiseal Ultra ClearDownload
Adiseal ISEGA certificateDownload
Where to buy strongest adhesive
In the UK, to buy the strongest adhesive, please contact us for details of your local stockist. To buy Adiseal products in the USA, Canada, France, Australia or any other country, visit https://guglue.com/ who can post to other countries.
Frequently asked questions about strongest adhesive
Adiseal has been shown to be the strongest adhesive in an independent adhesive strength test. It finished over 3 times stronger than the next best product and was even too strong for the screws of the test rig.
The better product is Adiseal. It has proved to be the strongest adhesive in an independent test. To find out specific details of how Adiseal is better than CT1, please send us an email.
Adiseal is widely regarded as the strongest adhesive currently available. It proved to be the strongest product in an independent test.
The strength of an adhesive is typically determined through testing, where it is subjected to specific conditions and forces to measure its ability to bond and withstand stress.
The strength of an adhesive is influenced by factors such as its chemical composition, bonding surface area, adhesive thickness, and the compatibility of the adhesive with the materials being bonded.
Yes, the strength of an adhesive can vary depending on the types of materials being bonded. Different adhesives may have better compatibility and bonding strength with specific materials.
To ensure the strongest bond, it’s important to follow proper surface preparation techniques, apply the adhesive according to the manufacturer’s instructions, and provide sufficient curing or drying time as recommended.