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Claim 1

A LID FOR A CONTAINER HAVING A FLARED SIDE WALL AND A BEADED RIM COMPRISING A BOTTOM WALL, A SIDE WALL EXTENDING UPWARDLY AND OUTWARDLY FROM THE PERIPHERY OF THE BOTTOM WALL AND JOINED THERETO BY AN OUTWARDLY CONVEX BEAD, SAID SIDE WALL OF THE LID HAVING UPPER AND LOWER PORTIONS WHICH DIVERGE INWARDLY IN AN UPWARDLY AND DOWNWARDLY DIRECTION, RESPECTIVELY, FROM THE INNER SURFACE OF THE CONTAINER SIDE WALL AND ADAPTED TO FORM A SEAL AT THE JUNCTION OF SAID UPPER AND LOWER PORTIONS OF THE SIDE WALL OF THE LID WITH THE INNER SURFACE OF THE CONTAINER SIDE WALL WHEN THE LID IS MOUNTED ON THE CONTAINER, AN OUTWARDLY EXTENDING FLANGE SECURD TO THE TOP OF THE SIDE WALL, A DOWNWARDLY EXTENDING SKIRT SECURED TO THE OUTER EDGE EDGE OF THE FLANGE AND SPACED FROM THE SIDE WALL, SAID SKIRT HAVING AN INWARDLY CONCAVED UPPER PORTION ADAPTED TO WRAP AROUND A SUBSTANTIAL PORTION OF THE BEADED RIM OF THE CONTAINER AND BE IN SURFACE-TOSURFACE CONTACT THEREWITH OVER A SUBSTANTIAL AREA, SAID SKIRT ALSO HAVING A DOWNWARDLY AND OUTWARDLY FLARED LOWER PORTION IMMEDIATELY BENEATH THE UPPER PORTION AND SPACED AND DIVERGING DOWNWARDLY FROM THE OUTER SURFACE OF THE CONTAINER SIDE WALL, THE LOWER PORTION OF SAID SKIRT BEING ADAPTED TO REST UPON AND SUPPORT THE LID ON THE UPPER PORTION OF THE SKIRT OF AN IDENTICAL LID DISPOSED BENEATH IT AND WITH THE BEAD OF THE LID SPACED FROM THE INNER SURFACE OF THE SIDE WALL OF THE LID BENEATH IT.