A sealing device for sealing the surface of contents of a container comprises a disc-like member having a central portion and a flexible perimeter and having a centrally located upstanding hollow handle having a purge valve at the upper end thereof. The purge valve has a closed position for preventing egress of air upwardly through said hollow handle and an open position to permit free passage of air therethrough. The disc-like member is contoured to correspond with the shape of the interior plan of the container.
A sealing device for sealing a container having a bottom, an interior plan and a closable top, and said container fillable with a liquid content to present an upper surface, said device comprising: a disc-like member integrally having a central portion, a flexible perimeter and a centrally located upstanding hollow handle, said hollow handle having a purge valve, said purge valve having a closed position for preventing egress of air through said hollow handle and an open position to permit free passage of air therethrough, said disc-like member is contou...
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