| http://www.w3.org/ns/prov#value | - cated in channels therein to form a longitudinal seal between the wedges; and in that in at least one longitudinal region of each pair of abutting sealing strips, one of the pair is substantially flush with the rim of its associated channel whilst the other projects above its channel such that, during assembly, if the wedges and thus the sealing strips, are radially displaced, the projecting strip
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