Description
A 1 lbs (0.45kg) block of duct seal that can be used as a fire stop around conduit and cable runs, as well as sealing materials such as metal, masonry, wood and plastic. It is a dark grey color. Permanently soft and non-toxic. Won't corrode metals. Provides 1.65 specific gravity. Has a composition of - Calcium carbonateMagnesium aluminum silicate Crystalline quartz silicaButane polymerSynthetic polymerCarbon blackAntioxidantCellulose fiberAluminum silicateTall oil rosinNaphthenic wax. UL listed.
