A bushing arrangement for sealing passage of a cable, a...

F - Mech Eng,Light,Heat,Weapons – 16 – L

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F16L 5/02 (2006.01) C08J 9/00 (2006.01) F16L 5/04 (2006.01) H02G 3/22 (2006.01)

Patent

CA 2475371

A bushing arrangement for sealing passage of a cable, a pipe, a conduit or the like through an opening in a wall, which bushing arrangement comprises at least one seal arranged in the opening in the operative condition, which seal is at least substantially made of an elastic, fire resistant material with a base of a cross-linkable polymer and an expandable agent in a quantity and composition such that the seal will expand in case of a fire, in such a manner that the opening on the wall will be sealed medium-tight, a special feature being the fact that the material of the seal has a foam structure comprising closed cells.

Dispositif d'isolation destiné à boucher de manière étanche le passage pour un câble, un tuyau, une conduite ou analogue, par une ouverture ménagée dans un mur. Ledit dispositif comporte au moins un élément d'étanchéité disposé dans l'ouverture lorsqu'il est à l'état d'utilisation et constitué au moins en grande partie d'une matière élastique résistante au feu à base d'un polymère réticulable et d'un agent expansible dans une quantité et selon une composition telles que cet élément d'étanchéité va se dilater en cas d'incendie et fermer de façon étanche l'ouverture dans le mur de manière moyennement serrée. Spécifiquement, la matière de l'élément d'étanchéité possède une structure sous forme de mousse comportant des cellules fermées.

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