Hermetic seal for liquid containers

A hermetic seal for liquid containers, comprising:

• a flat, rectangular, parallelepiped-shaped element including a hinged mid-plane dividing said element into a first part and a second part over more than one half of a major dimensions of said element, said element first part and said second part each having outer faces, each outer face having a longitudinal groove, and each of said first part of said second part having an inner face with longitudinally extending projecting ribs, said longitudinal projecting ribs on said first part being offset from said longitudinal projecting ribs on said second part;
• a bridge-shaped piece including first and second laterally projecting wings, said bridge-shaped element defining a receiving portion between said wings on each side of a peripheral opening, said receiving portion having an inner surface with inner surface ribs, said inner surface ribs being dimensioned corresponding to said longitudinal grooves for receiving said longitudinal grooves allowing said bridge receiving portion to receive said first part and said second part causing said longitudinal projecting ribs of said first part to move into a space between adjacent said longitudinal ribs of said second part or to move into a space adjacent an end of one of said longitudinal ribs of said second part as said flat element is moved in a sliding action.

A hermetic seal for liquid containers, comprising:

• a flat, rectangular, parallelepiped-shaped element including a hinged mid-plane dividing said element into a first part and a second part over more than one half of a major dimension of said element, said element first part and said second part each having outer faces, each outer face having a longitudinal groove, and each of said first part of said second part having an inner face with longitudinally extending projecting ribs;
• a bridge-shaped piece including first and second laterally projecting wings, said bridge-shaped element defining a receiving portion between said wings, said receiving portion having an inner surface with inner surface ribs, said inner surface ribs being dimensioned corresponding to said longitudinal grooves for receiving said longitudinal grooves allowing said bridge receiving portion to receive said first part and said second part;
• said first part and said second part having a free end with a concave edge for pressing said free end with a thumb during said sliding action between said bridge piece and said first part and said second part, one of said first part and said second part being shorter than another of said first part and said second part whereby the thumb is not pinched when said first part and said second part are forced together by said bridge.