Description
A 5 lbs (2.3kg) 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 silicateCrystalline quartz silicaButane polymerSynthetic polymerCarbon blackAntioxidantCellulose fiberAluminum silicateTall oil rosinNaphthenic wax.UL listed.
