For caulking and sealing around windows and doors, gutters and vents, siding and trim, and molding. Adheres to glass, ceramic, fiberglass, porcelain, non-oily woods, canvas, most metals, plastics and rubbers and painted surfaces. Provides a watertight, flexible seal that won't crack, crumble or shrink. Once cured, its unaffected by temperature extremes (negative 40-degrees to 400-degrees Fahrenheit. Meets ASTM specification C 920, Class 25, Type S, Grade NS. Covers 56 lin. ft. at a 3/16" bead size.