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 Aluminum Liquid, Devcon Aluminum Putty, and Devcon FasMetal™ 10 HVAC Repair form a nonrusting finish.

Devcon Metal Patch & Fill repairs worn, rusted, and corroded surfaces with less preparation.

These surface fillers come in a pen for precision application. After applying, use the LED on the back of the pen to instantly cure. They can be used with most types of metal as well as ceramic, stone, and porcelain.

Repair small leaks and cracks in coolant systems for commercial vehicles and industrial equipment. These surface fillers meet ASTM D3147 for their ability to stop leaks in engine cooling systems. Pour them into your coolant to fix both internal and external leaks. They contain ceramic microfibers and copper particles to create a permanent seal. They’re compatible with antifreeze and other coolant system additives.

Also known as sloshing compounds, these two-part epoxies bond to rough and rusty surfaces in fuel tanks to repair leaks and prevent further corrosion. They withstand permanent immersion in fuel, oil, and harsh solvents. Use them with metal, plastic, and fiberglass tanks. Mix the smaller can with the bigger one and pour into your fuel tank. Rotate the tank to coat the interior and dump out any excess. Allow to cure overnight. Size listed is the combined total of the two parts.

1.5-pint container can treat a 10-gallon fuel tank. 3-pint container can treat a 20-gallon fuel tank.

These patching compounds are the most flexible and watertight we offer. Developed for use on flashing, chimneys, and high-stress areas, they are highly vibration resistant.

Dispense compounds in a cartridge in a standard caulk gun (sold separately).

Compounds that cannot be sold to the regions listed exceed local regulatory limits on VOCs (volatile organic compounds).

Repair holes and seal gaps in roofing and gutters. These patching compounds are durable and water resistant.

Apply acrylic compounds to dry surfaces. Apply asphalt compounds to wet or dry surfaces.

Roll out a fast fix for leaky roofs and gutters with these peel-and-stick rolls. Backing is rubberized asphalt adhesive. Roll can be cut to size. Use primer (sold separately) for optimal adhesion.

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.

For use in processing equipment that carries particles smaller than 1/16" in diameter, these ceramic-filled epoxies rebuild and repair surfaces exposed to abrasion from particles, such as dust collectors, fan blades, and fan housings. 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.

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.