Which Plastic Epoxy Adhesives Brand Wins?
This head-to-head test of 5 plastic epoxy adhesives options has the measured results for each. See how they ranked and watch the full test video.
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.
Weight Hang Test
- 1JB Weld Original
the only survivor of the group, held roughly 11 lb (8 lb plus chain weight) before eventually failing; failure occurred at the plastic surface, about 95 percent of the epoxy remained stuck to the steel
- 2JB Weld Plastic Bonder
best among the plastic-specific epoxies (excluding JB Weld Original), beat Gorilla, Super Glue Plastic Fusion, and Loctite by over a pound; bonded better to the steel than to the plastic and failed at the plastic surface
- 3Gorilla Clear Weld
failed at both the steel and plastic surfaces, described as not sticking well to either
- 4Super Glue Plastic Fusion
failed to fuse to the plastic itself, epoxy remained on the steel
- 5Loctite Ultra Gel Control (super glue)
not distinctly described beyond the general group of plastic-specific epoxies that lost to JB Weld Plastic Bonder by over a pound
Twist Torque Test
- 1JB Weld Original
exact failure torque not clearly attributable in this pass of the transcript, but it outlasted Plastic Bonder (35 inch pounds) and Gorilla (40 inch pounds)
- 2JB Weld Plastic Bonder
first to fail, at 35 inch pounds
- 3Gorilla Clear Weld
second to fail, at 40 inch pounds
- 4Super Glue Plastic Fusion
exact failure torque not clearly attributable in this pass of the transcript
- 5Loctite Ultra Gel Control (super glue)
held so well that the plastic bolt itself broke before the epoxy bond failed, undefeated at least up to 115 inch pounds, winner of this test
Dead Blow Impact Test
- 1JB Weld Original
tied for first place, broke free from the plastic but remained glued well to the metal, described as one of the softer more flexible epoxies giving a good mix of flexibility and strength
- 2JB Weld Plastic Bonder
disappointing, described as a very hard epoxy that does not stick very well to plastic
- 3Gorilla Clear Weld
amazing performance, best or tied for best due to being very flexible and rubbery rather than hard
- 4Super Glue Plastic Fusion
poor performance, described as very rigid, hard, and not able to stand up to vibration
- 5Loctite Ultra Gel Control (super glue)
did a great job sticking to the steel but failed to stick to the plastic, described as very hard and rigid and unable to take vibration or impact
Final Flex Demo
- 1JB Weld Original
presenter pulled the bolt by hand after the dead blow test and showed a lot of flexibility before it snapped, described as not having much strength but a good bonding job
- 2JB Weld Plastic Bonder
not tested, demo only performed on JB Weld Original
- 3Gorilla Clear Weld
not tested, demo only performed on JB Weld Original
- 4Super Glue Plastic Fusion
not tested, demo only performed on JB Weld Original
- 5Loctite Ultra Gel Control (super glue)
not tested, demo only performed on JB Weld Original
How it was tested
- gravitational weight hang test to failure
- twisting torque test to failure using a torque wrench, in inch pounds
- dead blow impact test with a wrench dropped repeatedly, increasing in size and weight, until failure
- final hand flex demonstration on JB Weld Original only
