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  2. Hermetic seal - Wikipedia

    en.wikipedia.org/wiki/Hermetic_seal

    A hermetic seal is any type of sealing that makes a given object airtight (preventing the passage of air, oxygen, or other gases). The term originally applied to airtight glass containers but, as technology advanced, it applied to a larger category of materials, including metals , rubber , and plastics .

  3. Heart of Frédéric Chopin - Wikipedia

    en.wikipedia.org/wiki/Heart_of_Frédéric_Chopin

    Recessed in the lid is a silver plate in the form of a heart, with an engraved inscription containing Frederic Chopin's birth and death dates. This box is surrounded by lead plates for protection from moisture. Inside this box is a large crystal jar hermetically sealed, in which, in transparent alcohol, is Chopin's perfectly preserved heart.

  4. Sauerbruch chamber - Wikipedia

    en.wikipedia.org/wiki/Sauerbruch_chamber

    A Sauerbruch chamber, is a hermetically sealed chamber where surgical operations of the thorax are carried out, preventing complication by elevating or reducing air pressure. [1] It was developed by the German surgeon Ferdinand Sauerbruch and first used in 1904. In the Sauerbruch chamber the patient's head is elided, sticking out of the glass ...

  5. Alchemical symbol - Wikipedia

    en.wikipedia.org/wiki/Alchemical_symbol

    Seal of Solomon – Signet ring attributed to the Israelite king Solomon; Rosy Cross – Western esoteric symbol; Eye of Providence – Symbol; Sigil – Magical symbol, as used by Hermetic theurgists. Sigillum Dei – Seal of God, or Seal of Truth, according to John Dee

  6. Hermeticism - Wikipedia

    en.wikipedia.org/wiki/Hermeticism

    The phrase "hermetically sealed" originates from alchemical practices and refers to an airtight sealing method used in laboratories. This term became a metaphor for the safeguarding of esoteric knowledge, representing the idea that such wisdom should be kept hidden from the uninitiated.

  7. 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 ]

  8. Get a First Look at New 'Signed, Sealed, Delivered: A ... - AOL

    www.aol.com/first-look-signed-sealed-delivered...

    Signed, Sealed, Delivered: A Tale of Three Letters premieres on Friday, July 12 at 9 p.m. ET on Hallmark Mystery. Tune in earlier at 7 p.m. that day to catch Signed, Sealed, ...

  9. Induction sealing - Wikipedia

    en.wikipedia.org/wiki/Induction_sealing

    Perhaps the most common use of induction sealing is cap sealing, a non-contact method of heating an inner seal [1] [2] to hermetically seal the top of plastic and glass containers. This sealing process takes place after the container has been filled and capped. [3] An induction sealed inner seal