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About Structural Adhesives
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Compare epoxy, acrylic, and urethane adhesive options. Then learn about adhesive performance measures and best practices to create a strong bond.
Waterproof Epoxy Structural Adhesives
 |  |  |
Pail | Single-Use Packet | Stick |
 |  | |
Syringe | Tube |
Even when used underwater, these adhesives maintain their strength. Epoxies are the strongest and most chemical-resistant adhesives. They bond especially well on metal.
These epoxies come in two parts that need to be mixed. The container size listed is the combined total of the two parts.
Paste—Thicker than liquid adhesives but still spreadable—good for filling gaps and covering surfaces.
Putty—Slice off a chunk and mold it into the shape you need.
Thick Liquid—Flow into narrower gaps than gels and pastes, but thick enough to stay put on uneven surfaces.
Container | Strength | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Shear, psi | Peel | Mix Ratio | Consistency | Viscosity | Temp. Range, ° F | For Joining | Pkg. Qty. | Pkg. | |||
J-B Weld | ||||||||||||||||
ClearWeld | ||||||||||||||||
| 50114 | 0.5 | Syringe | 5 min. | 1 hr. | 1,500 | — | 1:1 | Paste | 9,000 cP | — | Composite, Metal, Plastic, Rubber | 1 | 7605A25 | 00000 | ||
| 50240H | 8 | Tube | 5 min. | 1 hr. | 1,500 | — | 1:1 | Paste | 9,000 cP | — | Composite, Metal, Plastic, Rubber | 1 | 7605A23 | 00000 | ||
MarineWeld | ||||||||||||||||
| 8272 | 2 | Tube | 6 hr. | 24 hr. | 1,800 | Not Rated | 1:1 | Paste | 250,000 cP | — | Composite, Metal, Plastic, Rubber | 1 | 7605A15 | 0000 | ||
| 50172 | 0.85 | Syringe | 5 min. | 1 hr. | 1,800 | Not Rated | 1:1 | Paste | 100,000 cP | -20 to 300 | Composite, Glass, Masonry, Metal, Plastic, Rubber, Wood | 1 | 7605A7 | 00000 | ||
Plastic Bonder | ||||||||||||||||
| 50133 | 0.85 | Syringe | 6 min. | 1 hr. | 1,700 | — | 1:1 | Paste | 100,000 cP | — | Plastic | 1 | 7605A24 | 0000 | ||
WaterWeld | ||||||||||||||||
| 8277 | — | Stick | 25 min. | 60 min. | 900 | Not Rated | — | Putty | Not Rated | — | Composite, Metal, Plastic, Rubber | 1 | 7605A16 | 0000 | ||
Devcon | ||||||||||||||||
| 11801 | — | Pail | 45 min. | 24 hr. | 2,600 | — | 1:1 | Putty | Not Rated | 40 to 250 | Composite, Metal, Plastic | 1 | 7605A211 | 000000 | ||
Other Structural Adhesives | ||||||||||||||||
| — | — | Single-Use Packet | 25 min. | 7 day | 2,200 | Not Rated | 2.5:1 | Thick Liquid | 40,000 cP | 0 to 220 | Composite, Masonry, Metal | 10 | 7538A33 | 00000 | ||
Epoxy Structural Adhesives for Harsh Environments
 |  |
Can | Cartridge |
With excellent resistance to corrosive chemicals, these epoxies maintain bonds in tough conditions.
Epoxies are the strongest and most chemical-resistant structural adhesives. They bond especially well on metal. Choose an adhesive that hardens quickly for fast repairs, or one that hardens slowly to allow more time for positioning.
These adhesives come in two parts that need to be mixed. The container size listed is the combined total of the two parts.
Model Number E-120HP—Resist acetone, fuel, and oil. These adhesives also bond dissimilar materials and withstand rapid changes in temperature.
Model Number 9430—Resist fuel and hydraulic fluid.
Cartridge—To mix and dispense these adhesives, you'll need a mixer nozzle and dispensing gun.
Thick Liquid—Flow into narrower gaps than gels and pastes, but thick enough to stay put on uneven surfaces.
Container | Strength | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size | Type | Begins to Harden | Reaches Full Strength | Shear | Peel | Mix Ratio | Consistency | Viscosity, cP | Temp. Range, ° F | Environment | For Joining | Each | |||
Loctite® | ||||||||||||||||
| E-120HP | 1.69 fl. oz. | Cartridge | 2 hr. | 24 hr. | 4,300 psi | Not Rated | 2:1 | Thick Liquid | 30,000 | -65 to 250 | Corrosive, Harsh, Submersible | Ceramic, Metal, Plastic, Rubber, Metal to Plastic, Metal to Rubber, Plastic to Rubber | 6430A24 | 000000 | ||
| E-120HP | 6.76 fl. oz. | Cartridge | 2 hr. | 24 hr. | 4,300 psi | Not Rated | 2:1 | Thick Liquid | 30,000 | -65 to 250 | Corrosive, Harsh, Submersible | Ceramic, Metal, Plastic, Rubber, Metal to Plastic, Metal to Rubber, Plastic to Rubber | 1765A44 | 00000 | ||
| E-120HP | 13.5 fl. oz. | Cartridge | 2 hr. | 24 hr. | 4,300 psi | Not Rated | 2:1 | Thick Liquid | 30,000 | -65 to 250 | Corrosive, Harsh, Submersible | Ceramic, Metal, Plastic, Rubber, Metal to Plastic, Metal to Rubber, Plastic to Rubber | 1765A43 | 000000 | ||
| 9430 | 32 fl. oz. | Can | 50 min. | 5 day | 4,230 psi | 60 lbf/in. wd. | 3.78:1 | Thick Liquid | 12,000 | -65 to 180 | Corrosive, Harsh, Submersible | Metal, Plastic, Rubber, Metal to Plastic, Metal to Rubber, Plastic to Rubber | 1813A238 | 000000 | ||
| 9430 | 1.25 gal. | Can | 50 min. | 5 day | 4,230 psi | 60 lbf/in. wd. | 3.78:1 | Thick Liquid | 12,000 | -65 to 180 | Corrosive, Harsh, Submersible | Metal, Plastic, Rubber, Metal to Plastic, Metal to Rubber, Plastic to Rubber | 1813A239 | 000000 | ||
Other Structural Adhesives | ||||||||||||||||
| — | 1.69 fl. oz. | Cartridge | 30 min. | 24 hr. | 360 psi | Not Rated | 2:1 | Thick Liquid | 7,000 | -50 to 350 | Corrosive, Harsh, Submersible | Composite, Metal, Plastic, Rubber, Metal to Composite, Metal to Plastic, Metal to Rubber, Plastic to Composite, Plastic to Rubber, Rubber to Composite | 7513A3 | 00000 | ||
| — | 1.69 fl. oz. | Cartridge | 40 min. | 24 hr. | Not Rated | Not Rated | 2:1 | Thick Liquid | 10,000 | -65 to 350 | Corrosive, Harsh, Submersible | Metal, Plastic, Metal to Plastic | 7513A4 | 00000 | ||
