Which Epoxy Brand Wins?
This head-to-head test of 6 epoxy options has the measured results for each. See how they ranked and watch the full test video. Shoppers cross-shopping epoxy adhesive, epoxy resin adhesive, epoxy glue and jb weld for plastic land here for the head to head that settles it.
Some figures on this page were transcribed from the test video and have not been independently re-verified. Treat the numbers as a close guide and watch the full video for the exact readings.
JB Weld Original
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The measured results
Every number below is read straight from the test. Products are listed in the order they finished.
Bonding quality
- 1JB Weld Original
JB Weld won this competition and what's interesting about the JB Weld as you can see it stuck very well to the material
- 2Devcon Plastic Steel
Devcon a lot like JB well did a terrific job of sticking to both the bolt as well as the steel... the epoxy is breaking free from itself and not breaking free from the steel
- 3Gorilla Epoxy
gorilla actually did a better job than I thought it would for a quick drying epoxy... as you can see though it did not stick to the steel it broke free
- 4Loctite
I can't really tell much of a difference between Loctite and the JB quick weld, both of them did the exact same thing, they just didn't stick to the steel
- 5JB Weld KwikWeld
these quick epoxies just seem to fail at sticking to whatever surface you're trying to make it stick to
- 6JB Weld Extreme Heat
it doesn't appear that the extreme heat has very good adhesive properties, this stuff [is] very hard and brittle... it just sort of breaks away
Twisting torque test
- 1JB Weld Original
JB well just failed at 185 inch lbs
- 2Devcon Plastic Steel
Devcon proved to be a little bit stronger [than JB Weld Original]
- 5JB Weld KwikWeld
JB quick weld failed at 100 inbs
- 6JB Weld Extreme Heat
it just failed just broke, I didn't even get 5 in lbs of torque
- 3Gorilla Epoxynot tested
- 4Loctitenot tested
Downward force test
- 1JB Weld Originalup to15 lbs
now now 17 1/2 lb okay we're up to 20 lbs okay 22 and a half lb okay up next is 25 pound
- 5JB Weld KwikWeld
the JB quick weld just failed 122 lbs
- 6JB Weld Extreme Heat
that didn't hold at all, that's extremely weak, I got right at 10 lb
- 2Devcon Plastic Steelnot tested
- 3Gorilla Epoxynot tested
- 4Loctitenot tested
All measurements (2 more)+
Torque failure mode
- 1JB Weld Original
the JB Weld is just a little bit more pliable or a little bit more flexible
- 2Devcon Plastic Steelnot tested
- 3Gorilla Epoxynot tested
- 4Loctitenot tested
- 5JB Weld KwikWeldnot tested
- 6JB Weld Extreme Heatnot tested
Failure mode
- 2Devcon Plastic Steel
Devcon on the other hand is just very very brittle, it's a very hard plastic
- 1JB Weld Originalnot tested
- 3Gorilla Epoxynot tested
- 4Loctitenot tested
- 5JB Weld KwikWeldnot tested
- 6JB Weld Extreme Heatnot tested
How it was tested
- downward/gravitational force weight test to failure
- twisting torque test to failure measured in inch-pounds
- shock/impact drop test on the remaining strongest epoxies
- surface bonding and adhesion quality inspection
