• Draft-Block is a 1-component expanding polyurethane foam sealant, dispensing as a bead from an aerosol container to fill voids & cavities on flat/irregular surfaces. When cured it is odorless, non-corrosive and inert, containing no urea formaldehyde. • Expands 3X • Tack-free in approx. 45 min. • No urea formaldehyde
