Cover for expandable connections

摘要

Employing a sleeve that spans the connection and a ring seal enhances the sealing integrity of expanded connections. The expansion of the connection brings the connection to the sleeve and engages the seal with the sleeve. The seal can be on the connection or the sleeve and the assemblies can be provided inside or outside the connection or in both places. A recess can be provided in either case so that after expansion the sleeve is flush to the interior or exterior wall.