| 摘要 |
<p>A coupling (1) for connection to a tubular conduit (4) has a hollow expandable seal arrangement (12) moveable from an unexpanded position in which a tubular conduit (4) can be pushed past the seal to an expanded position in which the seal arrangement (12) generates a seal between the coupling end (2) and the tubular conduit (4) on the introduction of a fluid (36) into the seal. The hollow expandable seal arrangement (12), when in the expanded position, is adapted to form a set seal between the coupling end (2) and said tubular conduit (4), for instance by using a setting fluid for its expansion, or by means of a second adhesive toroidal seal (40) positioned between the expandable seal (12) and the tubular conduit (4), the second seal (40) being forced into an adhered set seal with the tubular conduit (4) when the expandable seal (12) is in the expanded position.</p> |
