Sealing device for the annular space between a container internal wall of a vertical cylindrical container for fluid and the floating roof

摘要

The system for sealing the annular space between the wall (2) of a tank and its floating roof (5) comprises a sealing ring (11). This is attached to pivoting arms (12) which are supported by springs (17) and attached to the roof and move to ensure that the gap is sealed when it moves.