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  2. Mason jar - Wikipedia

    en.wikipedia.org/wiki/Mason_jar

    A collection of Mason jars filled with preserved foods. A Mason jar, also known as a canning jar, preserves jar or fruit jar, is a glass jar used in home canning to preserve food. It was named after American tinsmith John Landis Mason, who patented it in 1858. The jar's mouth has a screw thread on its outer perimeter to accept a metal ring or ...

  3. John Landis Mason - Wikipedia

    en.wikipedia.org/wiki/John_Landis_Mason

    John L. Mason. John Landis Mason (c. 1832 in Vineland, New Jersey – February 26, 1902) was an American tinsmith and the patentee of the metal screw-on lid for antique fruit jars commonly known as Mason jars. Many such jars were printed with the line "Mason's Patent Nov 30th 1858". [1] He also invented the first screw top salt shaker in 1858.

  4. Vacuum packing - Wikipedia

    en.wikipedia.org/wiki/Vacuum_packing

    Sealed food alongside a home vacuum sealer and plastic rolls used for sealing. Vacuum packing is a method of packaging that removes air from the package prior to sealing. This method involves placing items in a plastic film package, removing air from inside and sealing the package. [1]

  5. 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.

  6. Concrete sealer - Wikipedia

    en.wikipedia.org/wiki/Concrete_sealer

    In past decades attempts to protect concrete have included sealers ranging from wax to linseed oil.Today, high quality concrete sealers can block up to 99% of surface moisture.

  7. Porosity sealing - Wikipedia

    en.wikipedia.org/wiki/Porosity_sealing

    Casting porosity can be caused by gas formation or solidification while the metal is being moved from a liquid state to a solid state. This porosity can range in size, from sub-micron to voids greater than 10 mm, depending on the casting. Casting defects caused by porosity can affect the part’s structural integrity, creating a failure point ...

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