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2. Weck jar - Wikipedia

   en.wikipedia.org/wiki/Weck_jar

   The glass jars come in a variety of shapes and sizes, have rubber seals, glass lids, and stainless steel clips. Food is processed in Weck jars using the water bath canning technique, not a pressure canner. During the canning process the lids are secured by the clips which must be removed once the processing is complete and the jars have cooled.

3. Mason jar - Wikipedia

   en.wikipedia.org/wiki/Mason_jar

   In 1903 Alexander Kerr introduced lids with a permanent rubber seal. His improved design in 1915 used the modern design. [12] Jars are closed with two-piece metal lids that seal on the rim. The jar lid has a rubber or rubber-like sealing surface and is held in place by a separate metal band. [8] Mason sold the patents for the Mason jar to the ...

4. Home canning - Wikipedia

   en.wikipedia.org/wiki/Home_canning

   Water bath canning is appropriate for high-acid foods only, such as jam, jelly, most fruit, pickles, and tomato products with acid added. It is not appropriate for meats and low-acid foods such as vegetables. [2] This method uses a pot large enough to hold and submerge the glass canning jars. Food is placed in glass canning jars and placed in ...

5. Canning - Wikipedia

   en.wikipedia.org/wiki/Canning

   Canning is a method of food preservation in which food is processed and sealed in an airtight container (jars like Mason jars, and steel and tin cans). Canning provides a shelf life that typically ranges from one to five years, [a] although under specific circumstances, it can be much longer. [2]

6. Double seam - Wikipedia

   en.wikipedia.org/wiki/Double_seam

   A double seam is a canning process for sealing a tin can by mechanically interlocking the can body and a can end (or lid). Originally, the can end was soldered or welded onto the can body after the can was filled. [1] However, this introduced a variety of issues, such as foreign contaminants (including lead and other harmful heavy metals).

7. Jar - Wikipedia

   en.wikipedia.org/wiki/Jar

   A jar is a rigid, cylindrical or slightly conical container, typically made of glass, ceramic, or plastic, with a wide mouth or opening that can be closed with a lid, screw cap, lug cap, cork stopper, roll-on cap, crimp-on cap, press-on cap, plastic shrink, heat sealed lidding film, an inner seal, a tamper-evident band, or other suitable means.