Duct seal. Seals around junction boxes, flashings and service entrances. Permanently soft, non-toxic compound can be painted immediately after application. Won t adversely affect other plastic materials or corrode metals.
IDEAL 1 lb. duct seal in dark gray putty color is ideal for sealing metal, masonry, wood or plastic.
It offers 1.65 specific gravity and is non-toxic.
It has calcium carbonate, magnesium aluminum silicate, crystalline quartz silica, butane polymer, synthetic polymer, carbon black, antioxidant, cellulose fiber, aluminum silicate, tall oil rosin and naphthenic wax composition.