Rust-Oleum Corp.
LeakSeal uses self-fusing technology to create an airtight bond. The tape does not stick to the substrate to which it is applied but rather fuses with itself. It can withstand up to 700 pounds per square inch of pressure and resists temperatures from -85-500-degrees. The tape also withstands most solvents, acids, and oils, and it is available in 10-foot rolls in black and opaque colors.