PUR BLACK is an aerosol, moisture-curing polyurethane foam. Each can is quality tested to assure uniform and reliable performance. The propellants are in compliance with the requirements of the Montreal Protocol. Use PUR BLACK with any of Todol's line of foam guns. This system assures total control of the placement and the amount of foam that is used. It reduces foam waste and eliminates trimming. Foam consumption is reduced by 25% when using the PUR BLACK as compared to foam dispensed directly from the aerosol valve. Each can of PUR BLACK delivers over 2,800 cubic inches of cured foam. This makes a 1/2" diameter bead over 1,200 feet long. It is tack free in 10 minutes and trimmable in 30. Cured foam resists solvents, water, and age hardening. Foam which is exposed to direct sunlight will gradually decompose; a coat of paint is recommended to protect the foam.