Intumescent seals

Details Intumescent seals Intumescent seals

E - Fixed Constructions

06

B

277/71

E06B 5/16 (2006.01) E04B 1/94 (2006.01) E06B 7/23 (2006.01)

Patent

CA 1329228

- 16 - ABSTRACT INTUMESCENT SEALS An intumescent seal comprises a first body or mass of intumescent material which provides a hard foam on heating and a second body or mass of intumescent material which produces a soft foam on heating. An intumescent seal comprises at least one body of intumescent material which produces a hard foam on heating and at least one body of intumescent material which produces a soft foam on heating, the intumescent materials being carried by at least one of a pair of members or parts between which gap is defined at least in a predetermined relative position of the two members or parts, the intumescent material being disposed so as to intumesce into the gap on heating at least when the members or parts are in said predetermined position.

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