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About Structural Adhesives
More
Surface Fillers for Metal





Mix these two-part surface fillers together to repair leaks and cracks as well as to rebuild rough spots in metal. The size listed is the combined total of the two parts.
Loctite® Fixmaster Aluminum Liquid and Loctite® Fixmaster Aluminum Putty form a nonrusting finish.
Devcon Plastic Steel surface fillers can repair areas where brazing and welding is impractical.
NSF/ANSI 61 surface fillers meet safety standards for use with drinking water.
Surface fillers in a stick have a resin on the outside and a hardener on the inside. Cut the desired amount from the sticks, knead to a uniform color to mix, and press into place.
Container | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size | Type | Begins to Harden, min. | Reaches Full Strength, hrs. | Consistency | Mix Ratio | Approx. Coverage @ Thick. | Temp. Range, °F | Color | Specifications Met | Finishing Method | For Use On | Each | |
Loctite® Fixmaster Aluminum Liquid | ||||||||||||||
PC 3466 | 1 lbs. | Jar, Can | 20 | 24 | Thick Liquid | 5:1 | 60 sq. in. @ 1/4" | -20° to 200° | Gray | __ | Machine, Drill, Tap | Aluminum | 0000000 | 0000000 |
Devcon Plastic Steel® Liquid | ||||||||||||||
10210 | 1 lbs. | Jar, Can | 45 | 16 | Thick Liquid | 9:1 | 50 sq. in. @ 1/4" | -40° to 250° | Dark Gray | __ | Machine, Drill, Sand, Saw, Tap | Aluminum, Brass, Copper, Stainless Steel, Cast Iron | 00000000 | 00000 |
10220 | 4 lbs. | Jar, Can | 45 | 16 | Thick Liquid | 9:1 | 200 sq. in. @ 1/4" | -40° to 250° | Dark Gray | __ | Machine, Drill, Sand, Saw, Tap | Aluminum, Brass, Copper, Stainless Steel, Cast Iron | 00000000 | 000000 |
Devcon Plastic Steel® Epoxy | ||||||||||||||
52345 | 2 oz. | Tube | 60 | 24 | Thick Liquid | 1:1 | 6 sq. in. @ 1/4" | -40° to 200° | Dark Gray | __ | Machine, Drill, Sand, Saw, Tap | Aluminum, Brass, Copper, Stainless Steel, Cast Iron | 00000000 | 0000 |
62345 | 0.8 oz. | Syringe | 60 | 24 | Thick Liquid | 1:1 | 6 sq. in. @ 1/4" | -40° to 200° | Dark Gray | __ | Machine, Drill, Sand, Saw, Tap | Aluminum, Brass, Copper, Stainless Steel, Cast Iron | 00000000 | 0000 |
Surface Fillers | ||||||||||||||
__ | 4 oz. | Stick | 3 | 24 | Putty | __ | 16 sq. in. @ 1/4" | -40° to 250° | Copper | NSF/ANSI 61 | Drill, Sand, Saw | Brass, Bronze, Copper | 0000000 | 0000 |
__ | 4 oz. | Stick | 3 | 24 | Putty | __ | 16 sq. in. @ 1/4" | -40° to 250° | Dark Gray | NSF/ANSI 61 | Machine, Drill, Sand, Tap | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium | 0000000 | 0000 |
__ | 16 oz. | Stick | 45 | 24 | Putty | __ | 64 sq. in. @ 1/4" | -40° to 250° | Off-White | __ | Machine, Drill, Sand, Tap | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium | 0000000 | 00000 |
High-Temperature Surface Fillers for Metal




Repair and rebuild metal surfaces that are exposed to heat. These surface fillers withstand temperatures over 450° F. Fillers that have a mix ratio are multi-part fillers. The size listed is the combined total of the parts.
Surface fillers in a stick have a resin on the outside and a hardener on the inside. Cut the desired amount from the sticks, knead to a uniform color to mix, and press into place.
Surface fillers in a syringe come with everything you need to make repairs.
Container | |||||||||||||
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Size, oz. | Type | Begins to Harden | Reaches Full Strength, hrs. | Heating Requirements to Reach Full Strength | Consistency | Mix Ratio | Approx. Coverage @ Thick. | Temp. Range, °F | Color | Finishing Method | For Use On | Each | |
Surface Fillers | |||||||||||||
1.5 | Syringe | 20 min. | 24 | __ | Putty | 9.1:1 | 1 sq. in. @ 1/4" | -40° to 500° | Gray | Machine, Drill, Saw | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium, Fiberglass | 0000000 | 000000 |
4 | Stick | 90 min. | 72 | __ | Putty | __ | 16 sq. in. @ 1/4" | -40° to 450° | Gold | Drill, Sand, Tap | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium | 0000000 | 0000 |
8 | Can | 5 hrs. | 6 | 2 hrs. air dry then 4 hrs. @ 200° F | Putty | __ | 32 sq. in. @ 1/4" | Not Rated to 2000° | Dark Gray | Sand | Steel, Stainless Steel, Cast Iron | 0000000 | 00000 |
12 | Can, Bottle | 2 hrs. | 6 | 4 hrs. air dry then 2 hrs. @ 160° F | Putty | 2:1 | 48 sq. in. @ 1/4" | Not Rated to 1400° | Light Gray | Sand | Aluminum | 0000000 | 00000 |
16 | Can, Bottle | 20 min. | 24 | __ | Putty | 9.1:1 | 10 sq. in. @ 1/4" | Not Rated to 500° | Gray | Machine, Drill, Saw | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium, Fiberglass | 0000000 | 00000 |
16 | Bottle | 5 hrs. | 6 | 2 hrs. air dry then 4 hrs. @ 200° F | Putty | __ | 65 sq. in. @ 1/4" | Not Rated to 2000° | Dark Gray | Sand | Steel, Stainless Steel, Cast Iron | 0000000 | 000000 |
24 | Can | 2 hrs. | 6 | 4 hrs. air dry then 2 hrs. @ 160° F | Putty | 2:1 | 96 sq. in. @ 1/4" | Not Rated to 1400° | Light Gray | Sand | Aluminum | 0000000 | 000000 |
Chemical-Resistant Surface Fillers for Metal

Chemicals will not affect these two-part epoxies. They repair cracked, worn, and damaged surfaces. The size listed is the combined total of the two parts.
Container | ||||||||||||||
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Size | Type | Begins to Harden, min. | Reaches Full Strength | Consistency | Mix Ratio | Approximate Coverage @ Thick. | Max. Thick. | For Use Outdoors | Temp. Range, °F | Color | Finishing Method | For Use On | Each | |
Surface Fillers | ||||||||||||||
6.5 oz. | Tube | 3 | 5 hrs. | Paste | 1:1 | 25 sq. in. @ 1/4" | 1/2" | Yes | -40° to 200° | Gray | Machine, Drill, Sand, Tap | Aluminum | 000000 | 000000 |
11 oz. | Tube | 25 | 7 days | Paste | 1:1 | 50 sq. in. @ 1/4" | 1/4" | Yes | -55° to 180° | Silver | Machine, Drill, Sand, Tap | Aluminum, Brass, Bronze, Steel, Cast Iron, Titanium | 0000000 | 00000 |
Conductive Surface Fillers for Electronics


A high silver content allows these surface fillers to conduct electricity and heat. Use them to fill gaps and rebuild missing material on electrical connections or to assemble new components.
Surface fillers in one-time-use packets and jars come as two parts. The size listed is the combined total of the two parts.
Volume resistivity and surface resistivity measure how well a material opposes the flow of electricity. The lower the rating, the more electricity it conducts.
Thermal conductivity measures a material’s ability to transfer heat. The higher the rating, the more heat it transfers.
Container | Temp. Range, °F | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size, oz. | Type | Begins to Harden | Reaches Full Strength | Thermal Conductivity, W/m-K | Volume Resistivity, ohms-cm | Mix Ratio | Min. | Max. | For Use On | Each | |
Loctite® Surface Fillers | ||||||||||||
3888 | 0.1 | One-Time-Use Packet | 90 min. | 24 hrs. | 1.44 | 0.001 | 100:6 | -40° | 170° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Polycarbonate Plastic | 0000000 | 000000 |
Surface Fillers | ||||||||||||
__ | 0.1 | One-Time-Use Packet | 90 min. | 24 hrs. | 6.05 | 0.009 | 100:6 | -75° | 250° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Ceramic, Glass | 0000000 | 00000 |
__ | 0.4 | One-Time-Use Packet | 90 min. | 24 hrs. | 6.05 | 0.009 | 100:6 | -75° | 250° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Ceramic, Glass | 0000000 | 000000 |
__ | 0.5 | Jar | 4 hrs. | 5 days | 5.77 | 0.0004 | 1:1 | Not Rated | 300° | Aluminum, Brass, Copper, Steel, Stainless Steel | 0000000 | 000000 |
__ | 1 | Jar | 4 hrs. | 5 days | 5.77 | 0.0004 | 1:1 | Not Rated | 300° | Aluminum, Brass, Copper, Steel, Stainless Steel | 0000000 | 000000 |
Pourable Surface Fillers

Make castings and fill voids with these two-part pourable epoxies. The size listed is the combined total of the two parts.
Certificates with a traceable lot number and product shelf life are available for these products. Download certificates from ACTIVITY after your order ships.
Container | |||||||||||||||
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Mfr. Model No. | Size, lbs. | Type | Begins to Harden, min. | Reaches Full Strength, hrs. | Consistency | Mix Ratio | Approximate Coverage @ Thick. | Max. Thick. | For Use Outdoors | Temp. Range, °F | Color | Finishing Method | For Use On | Each | |
Loctite® Fixmaster Steel Liquid | |||||||||||||||
EA 3472 | 1 | Can | 25 | 24 | Thick Liquid | 4:1 | 50 sq. in. @ 1/4" | 1" | Yes | -20° to 220° | Gray | Machine, Tap | Bronze, Copper, Steel, Stainless Steel, Cast Iron, Concrete | 0000000 | 000000 |
EA 3472 | 4 | Can | 25 | 24 | Thick Liquid | 4:1 | 200 sq. in. @ 1/4" | 1" | Yes | -20° to 220° | Gray | Machine, Tap | Bronze, Copper, Steel, Stainless Steel, Cast Iron, Concrete | 0000000 | 000000 |
Surface Fillers


These surface fillers can be used on vertical surfaces without sagging. They repair cracked, worn, and damaged surfaces. The size listed is the combined total of the two parts.
Devcon Plastic Steel® Liquid can repair areas where brazing and welding is impractical.
Container | ||||||||||||||
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Mfr. Model No. | Size | Type | Begins to Harden, min. | Reaches Full Strength | Consistency | Mix Ratio | Approx. Coverage @ Thick. | Temp. Range, °F | Color | Finishing Method | For Use On | Pkg. Qty. | Pkg. | |
Loctite® Fixmaster Epoxy | ||||||||||||||
EA 445 | 0.1 oz. | Mixer Cup | 5 | 12 hrs. | Thick Liquid | 1:1 | 1 sq. in. @ 1/4" | -65° to 180° | Gray | Machine, Sand, Tap | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium, ABS Plastic, CPVC Plastic, PETG Plastic, Polycarbonate Plastic, Polyimide Plastic, Polystyrene Plastic, Polyurethane Rubber, PVC Plastic, PVDF Plastic, Ceramic, Concrete, Glass, Wood | 10 | 0000000 | 000000 |
EA 445 | 1 oz. | Mixer Cup | 5 | 12 hrs. | Thick Liquid | 1:1 | 1 sq. in. @ 1/4" | -65° to 180° | Gray | Machine, Sand, Tap | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium, ABS Plastic, CPVC Plastic, PETG Plastic, Polycarbonate Plastic, Polyimide Plastic, Polystyrene Plastic, Polyurethane Rubber, PVC Plastic, PVDF Plastic, Ceramic, Concrete, Glass, Wood | 10 | 0000000 | 000000 |
EA 9131 | 0.1 oz. | Mixer Cup | 90 | 24 hrs. | Thick Liquid | 1.5:1 | 1 sq. in. @ 1/4" | -65° to 180° | White | Machine, Sand, Tap | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium, ABS Plastic, CPVC Plastic, PETG Plastic, Polycarbonate Plastic, Polyimide Plastic, Polystyrene Plastic, Polyurethane Rubber, PVC Plastic, PVDF Plastic, Ceramic, Concrete, Glass, Wood | 10 | 0000000 | 00000 |
Each | ||||||||||||||
Devcon Plastic Steel® Liquid | ||||||||||||||
10230 | 25 lbs. | Pail, Jug | 90 | 16 hrs. | Thick Liquid | 9:1 | 52 sq. in. @ 1/4" | 55° to 250° | Dark Gray | Machine, Drill, Sand, Saw, Tap | Aluminum, Brass, Copper, Stainless Steel, Cast Iron | __ | 00000000 | 00000000 |
Water-Resistant Surface Fillers

Mix these two-part epoxy surface fillers to create a strong repair in wet environments or underwater. Use them to repair cracked, worn, and damaged surfaces. Size listed is the combined total of the two parts.
Putty fillers come in a stick with a resin on the outside and a hardener on the inside. Cut the desired amount from the sticks, knead to a uniform color to mix, and press into place.
Container | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size, oz. | Type | Begins to Harden, min. | Reaches Full Strength | Consistency | Approx. Coverage @ Thick. | Max. Thick. | For Use Outdoors | Temp. Range, °F | Color | Finishing Method | For Use On | Each | |
Loctite® Fixmaster Underwater Repair Epoxy | ||||||||||||||
EA 9490 | 4 | Stick | 15 | 60 min. | Putty | 16 sq. in. @ 1/4" | 1/4" | Yes | Not Rated to 300° | White | Machine, Drill, Sand, Tap | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium, Polystyrene Plastic, Polycarbonate Plastic, Polyurethane Rubber, ABS Plastic, PVC Plastic, CPVC Plastic, PETG Plastic, PVDF Plastic, Polyimide Plastic, Fiberglass, Concrete, Wood | 0000000 | 000000 |
Surface Fillers for Plastic

Use these two-part fillers to rebuild cracked or worn plastic surfaces. The size listed is the combined total of the two parts.
Surface fillers in a stick have a resin on the outside and a hardener on the inside. Cut the desired amount from the sticks, knead to a uniform color to mix, and press into place. Use with most rigid and semi-rigid types of plastic. They meet NSF/ANSI 61 for use with drinking water.
Container | |||||||||||
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Size | Type | Begins to Harden | Reaches Full Strength | Consistency | Approx. Coverage @ Thick. | Temp. Range, °F | Color | Finishing Method | For Use On | Each | |
Surface Fillers | |||||||||||
4 oz. | Stick | 20 min. | 24 hrs. | Putty | 16 sq. in. @ 1/4" | -40° to 250° | Off-White | Drill, Sand, Saw | Polystyrene Plastic, Polycarbonate Plastic, Polyurethane Rubber, ABS Plastic, PVC Plastic, CPVC Plastic, PETG Plastic, PVDF Plastic, Polyimide Plastic | 0000000 | 00000 |
Retaining Compounds for Loose-Fitting Parts

Fill gaps up to 0.02" to secure worn unthreaded cylindrical metal parts such as shafts, bearings, and press-fit assemblies. These retaining compounds begin to harden once coated surfaces are pressed together, blocking exposure to air.
Primer (sold separately) cleans the surface and decreases the time to reach full strength. It is recommended when working with aluminum, stainless steel, and titanium; black-oxide finishes, and cadmium and zinc coatings.
Certificates with a traceable lot number and product shelf life are available for these products. Download certificates from ACTIVITY after your order ships.
Container | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size, oz. | Type | Max. Gap Size Filled | Begins to Harden | Reaches Full Strength | Temp. Range, °F | Consistency | Viscosity, cP | Shear Strength, lbs./sq. in. | Color | Each | |
High Locking Strength | ||||||||||||
Loctite® Retaining Compounds | ||||||||||||
660 | 0.2 | Tube | 0.02" | 20 min. | 24 hrs. | -65° to 300° | Paste | 250,000 | 2,490 | Silver | 0000000 | 000000 |
660 | 1.69 | Tube | 0.02" | 20 min. | 24 hrs. | -65° to 300° | Paste | 250,000 | 2,490 | Silver | 0000000 | 00000 |
Conductive Adhesives for Electronics
An alternative to solder, these flexible, silver-filled adhesives accommodate joint movement. Use them to bond electrical components and repair circuits.
Epoxy adhesives are two-part adhesives that need to be mixed together. The size listed is the combined total of the two parts.
Thermoplastic adhesives are one-part adhesives that don’t need to be mixed. Dry to the touch and faster and easier to apply than two-part adhesives, they’re best for use on automated assembly lines. Often used to join solar cells in solar panels, these adhesives make instant electrical connections without flux at lower temperatures than soldering. Since they attach to solar cells with heat and slight pressure, they limit stress cracks that can form when soldering. These adhesives can also be used as a bridge between multiple solar panels.


Container Size, oz. | Begins to Harden | Reaches Full Strength | Thermal Conductivity, W/m-K | Surface Resistivity, ohms-cm | Mix Ratio | Consistency | Temp. Range, °F | For Joining | Each | |
One-Time-Use Packet | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
0.09 | 3 hrs. | 24 hrs. | 1.55 | 0.05 | 1:1.15 | Paste | -75° to 230° | Ceramic, Glass, Metal | 0000000 | 000000 |
Can | ||||||||||
0.5 | 4 hrs. | 5 days | 7.93 | 0.0004 | 1:1 | Paste | 80° to 265° | Metal | 0000000 | 000000 |
1 | 4 hrs. | 5 days | 7.93 | 0.0004 | 1:1 | Paste | 80° to 265° | Metal | 0000000 | 000000 |

Lg. | Wd. | Thick. | Melting Temp., °F | Max. Temp., °F | Begins to Harden | Reaches Full Strength | Thermal Conductivity, W/m-K | Surface Resistivity, ohms-cm | Consistency | For Joining | Each | |
Strip with Adhesive on One Side | ||||||||||||
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12" | 1/16" | 0.001" | 250° | 300° | 5 sec. | 5 sec. | 12 | 0.0001 | Film | Metal | 00000000 | 00000 |