Method and sealing system for sealing an annular space between a rigid conduit and a pipe, tube or duct extending through the conduit and made of a thermally weakenable material

摘要

The invention relates to a method of sealing an annular space between a rigid conduit (2) and a pipe, tube or duct (3) consisting of a material which may be thermally fragile and which extends through the conduit (2) Comprising the steps of applying a layer of thermally expandable material (4) concentrically around a pipe, tube or duct (3) into the conduit (2), and sealing the sealant made of a refractory polymer to the conduit (3) (3) to each end of the conduit (2).