Abstract: An intumescent rod comprising an intumescent component formed of an intumescent material and a polymer matrix. The intumescent rod may include a second component forming a covering, core or layer adjacent the intumescent component. A method for manufacturing an intumescent rod including molding or extrusion of at least one of an intumescent component and an optional second component.

Abstract: A poke through fitting comprising a conduit body, the conduit body including a conduit, a fixed flange and a slidable flange, and an intumescent member formed at least in part of an intumescent material, said intumescent member comprising a retention member for retaining the intumescent member on the conduit body wherein an engagement member maintains a relationship between the slidable flange of the conduit body and the intumescent member during expansion of the intumescent material. A stop member is preferably provided in a fixed relationship to the conduit to limit the travel of the slidable flange during expansion of the intumescent material.

Abstract: A heat expanding, fire retardant composition comprising an intumescent component, an organic char-forming component, fillers, plasticizers, fire retardants, and a binder wherein the binder is a polyurethane which is formed in situ.