Intumescent fire stop device.

摘要

An intumescent fire stop device having a collar (12), the device is easy to install and effectively and efficiently channels heat to an intumescent material so that the intumescent material expands quickly and uniformly. An inner surface of the collar has a plurality of heat conducting tabs (22) that extend outwardly and secure the intumescent material to the collar. The heat conducting tabs extend into the intumescent material and thereby effectively channel heat from a fire into the interior regions of the intumescent material so that the intumescent material expands quickly and uniformly. The collar further includes a first interlocking end having at least one opening (42). The opening(s) is configured to receive finger(s) (44) on a second interlocking end of the collar. The interengagement of the finger(s) and opening(s) allows the collar to be firmly secured about a section of a pipe. The collar typically has a plurality of releasibly secured Z-shaped mounting clips (50). The mounting clips are used to secure the collar to firm, structural surface such as a wall or ceiling having an opening through which the pipe passes. <IMAGE>