Patent ID: 8857528

Claim:
A flame-blocking system for fixing a pipe, wire or cable in an open hole formed in a partition wall, the flame-blocking system comprising: an expandable flame retardant foam that expands in the presence of heat, the expandable flame retardant foam defining at least one through hole; wherein the expandable flame retardant foam is configured to be sufficiently rigid to be cut to a size of an open hole formed in a partition wall, such that the least one through hole can be formed through a thickness of the expandable flame retardant foam; and at least one expandable flame retardant tube that expands in the presence of heat passing through the through hole of the expandable flame retardant foam; wherein the expandable flame retardant tube is configured to be sufficiently rigid to insert into the through hole of the expandable flame retardant foam and to receive at least one of a pipe, wire and cable within an interior passageway of the expandable flame retardant tube; and further wherein the expandable flame retardant foam and the expandable flame retardant tube each include graphite.