Rectorseal 50250 Metacaulk Industrial Cable Coating 5 Gallon, GrayRectorseal 50250 Metacaulk Industrial Cable Coating is a ready to use, heavy duty spray coating which is ablative made to impede vertical horizontal fire propagation along grouped single comm. or power cables. Made for industrial utility applications. Features Factory Mutual (FM) approved our formulation has been used by major utilities corporations for over 25 years is considered by some as the industry standard. Water based, Low odor, is compatible