This multipurpose foam is made of polyurethane and expands to three times its original volume to fill in holes, gaps, openings and cracks. This insulation is particularly useful around pipes for weatherproofing. It can be cut sanded and painted after drying.Temperature Range: -200 to 200F, R-Value:4 to 5 per inch, Relative Set Time: ASTM E-84; UL 23: Flame Spread -10, Smoke Developed -30, Tack Free Time: 10 minutes, Available in Aerosol Can - 33316-12 Fl. Oz. / 33324-24 Fl. Oz.