Best Structural Adhesive (2026): 4 Picks Compared

A bumper tab snaps off in the driveway, and the choice is a new cover or a bond that holds the old one together. The best structural adhesive is the two-part epoxy or urethane that bonds the materials in the job, metal to metal or plastic to metal, without a fastener in sight. This guide compares 4 structural adhesives by type, size, working time, set time, substrates and warranty, so the cartridge you order matches the job on the bench.

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Picks for the garage

#	Product	Shop Score	Buy
1	3M Impact Resistant Structural Adhesive, 07333	9.7/10	Buy on Amazon
2	Norton NOR04615 SpeedGrip Structural Adhesive	9.6/10	Buy on Amazon
3	3M Scotch-Weld Structural Plastic Adhesive DP8010	9.6/10	Buy on Amazon
4	Norton Speedgrip Structural Urethane Adhesive	9.5/10	Buy on Amazon

1

3M Impact Resistant Structural Adhesive, 07333

3M·9.7/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A two-part epoxy in a 200 mL cartridge with a static mixing nozzle, recommended by many OEMs and listed with a lifetime warranty.

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Pros

• Recommended by many OEMs, listed as True Automotive OEM Recommended
• Higher impact strength versus traditional bonding adhesives
• Color changes from silver to purple to show mixing
• Lifetime warranty with corrosion protection

Cons

• For industrial or occupational use only, not for consumer sale
• No working time or full set time stated
• Purple color stays visible on the bond line
• No applicator gun is stated, only a static mixing nozzle

2

Norton NOR04615 SpeedGrip Structural Adhesive

Norton·9.6/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A two-part urethane in a 220 ml cartridge with a 1 minute working time for steel, aluminum, plastic and fiberglass.

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Pros

• Bonds steel, aluminum, flexible, semi-rigid and rigid plastic and fiberglass
• 1 minute working time for fast jobs
• 1 yr warranty on material and workmanship
• Versatile two-part urethane for bonding and repair

Cons

• No full set time stated
• No color change or mixing indicator stated
• No nozzle or applicator detail stated
• No repositioning window stated

3

3M Scotch-Weld Structural Plastic Adhesive DP8010

3M·9.6/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A 45 mL Duo-Pak structural plastic adhesive that joins low surface energy plastics with little to no surface preparation.

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Pros

• Joins polypropylene, polyethylene and TPOs without special surface preparation
• Can replace mechanical fasteners, screws, rivets and spot welds in many applications
• Up to 10 minutes for project readjustment
• Full set in 48 hours at 73 °F (23 °C)

Cons

• For industrial or occupational use only, not for consumer sale
• No applicator included
• No warranty term is stated
• No item weight stated

4

Norton Speedgrip Structural Urethane Adhesive

Norton·9.5/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A dual-component urethane adhesive in a 220 ml cartridge with a 1 minute working time for metal, plastic and composites.

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Pros

• Bonds in just 1.5 minutes for fast application
• Urethane formula for metal, plastic and composites
• Dual-component system for accurate mixing
• Cartridge size listed for multiple applications

Cons

• Title says 220 ml, bullets say 215 ml cartridge
• Title says 1 minute working time, bullets say bonds in 1.5 minutes
• Spec table lists 1.0 x 1.0 x 1.0 inches, which does not match a cartridge
• No warranty term is stated

Compared on paper

Specs such as CFM, PSI and torque are the manufacturer’s ratings as listed, collected 12 November 2026. Where a listing contradicts itself, both figures are shown.

How the points were given

Each adhesive is scored out of 10 on performance, build, value, safety and warranty, with the weights published on our How We Pick page. None states a UL, ETL or CSA listing, so all score zero on safety. Two state a warranty term: the 3M 07333 lists a lifetime warranty and the Norton NOR04615 lists a 1 year warranty.

Shop Scores range from a low of 9.2 to a high of 9.8, with each tool positioned by its weighted points proportionally, and more points always yields a higher score. Where a tool neither runs on power nor lists a safety feature, safety shows n/a and the other 90 points decide.

What the listings tell you

We read 4 adhesive listings. Two are two-part urethanes from Norton, one is a two-part epoxy from 3M, and one is a 3M structural plastic adhesive in a Duo-Pak. Only 1 states a full set time, the DP8010 at 48 hours, and only 1 states a repositioning window, the DP8010 at up to 10 minutes. Two state a warranty term, and 2 are marked for industrial or occupational use only. One lists a color change on mixing, and 1 listing contradicts itself on cartridge size and working time.

Buying guide: the best structural adhesive

Epoxy or urethane

Epoxy suits rigid bonds on metal: the 3M 07333 is a two-part epoxy listed for steel and aluminum, with higher impact strength versus traditional bonding adhesives and an OEM recommendation behind it. Urethane suits mixed materials and flexible parts: both Norton listings are two-part urethanes listed for steel, aluminum and plastic, and the Speedgrip lists composites too. The DP8010 is the plastic specialist, made for low surface energy plastics, including polypropylene, polyethylene and TPOs, without special surface preparation.

Working time and set time

Working time is the window for positioning the parts. The Norton listings give 1 minute, the DP8010 gives up to 10 minutes for readjustment, and the 3M 07333 states no working time at all. Full set time is a different number: only the DP8010 states one, 48 hours at 73 °F (23 °C). If the listing gives no set time, plan the job around the maker instructions on the cartridge, not a guess.

Substrates and surface prep

Match the adhesive to the materials in the job. The 07333 lists properly prepared steel and aluminum substrates. The DP8010 lists low surface energy plastics and needs little to no surface preparation. The Norton urethanes list the widest mix: steel, aluminum, flexible, semi-rigid and rigid plastic and fiberglass on the NOR04615, and metal, plastic and composites on the Speedgrip. Where the listing says properly prepared, check the maker instructions before you bond.

Size and cartridge

Cartridge size sets how many jobs one tube covers. The DP8010 is a 45 mL Duo-Pak for small repairs, the Norton cartridges are 220 ml, and the 3M 07333 is a 200 mL cartridge. The Speedgrip listing contradicts itself here, with 220 ml in the title and a 215 ml cartridge in the bullets, so confirm the size with the seller before you order. A static mixing nozzle is included with the 07333; the DP8010 notes that no applicator is included.

Warranty and industrial use

Two listings state a warranty term. The 3M 07333 lists a lifetime warranty with corrosion protection, and the Norton NOR04615 lists a 1 yr warranty on material and workmanship. The other two state no warranty term. Both 3M listings are marked for industrial or occupational use only, not for consumer sale or use, so read that line before you order if the cartridge is for a home garage.

Garage Fit Check

• Check the cartridge size against the job: the DP8010 is a 45 mL Duo-Pak, while the Norton cartridges are 220 ml.
• Check applicator fit before the first job: the 07333 includes a static mixing nozzle, and the DP8010 notes that no applicator is included.
• Check the working time before you mix: the Norton urethanes list 1 minute, and the DP8010 allows up to 10 minutes for readjustment.
• Confirm the Speedgrip size with the seller: the title says 220 ml and the bullets describe a 215 ml cartridge.
• Read the industrial use note on both 3M listings before you order for a home garage.

FAQ: garage tools

What is structural adhesive?

A structural adhesive is a two-part epoxy or urethane that bonds parts together without a fastener, and the maker of the DP8010 says it can replace mechanical fasteners, screws, rivets and spot welds in many applications. The listings here cover two-part epoxy, two-part urethane and a structural plastic adhesive in a Duo-Pak.

What is the strongest structural adhesive?

No listing here publishes a strength figure, so there is no number to rank them by. The 3M 07333 claims higher impact strength versus traditional bonding adhesives and is listed as True Automotive OEM Recommended, while the DP8010 is listed as extremely strong for plastic to metal bonding. Compare by the substrates each listing names and the warranty term it states.

How long does structural adhesive take to set?

Only the DP8010 states a full set time: fully set in 48 hours at 73 °F (23 °C). The Norton listings state a 1 minute working time, and the 3M 07333 states no working time or set time, so check the maker instructions on the cartridge for the rest.

Can structural adhesive replace screws or rivets?

In many applications, yes, according to the DP8010 listing, which says it can replace mechanical fasteners, screws, rivets and spot welds in many applications. The other listings describe bonding and repair rather than fastener replacement, so treat that claim as specific to the DP8010.

Does structural adhesive work on plastic?

Yes, where the listing names plastic. The DP8010 joins low surface energy plastics including polypropylene, polyethylene and TPOs, and the Norton urethanes list flexible, semi-rigid and rigid plastic alongside steel, aluminum and fiberglass. The 07333 epoxy lists steel and aluminum substrates only.

Related: the best structural adhesive for car chassis, epoxy putty vs body filler, our air tools hub and the best plastic stapler welder. Also see our bumper repair kit, plastic welder for bumper repair and best epoxy putty for aluminum.