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  2. 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]

  3. End-face mechanical seal - Wikipedia

    en.wikipedia.org/wiki/End-face_mechanical_seal

    In mechanical engineering, an end-face mechanical seal (often shortened to mechanical seal) is a type of seal used in rotating equipment, such as pumps, mixers, blowers, and compressors. When a pump operates, the liquid could leak out of the pump between the rotating shaft and the stationary pump casing.

  4. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    This is a list of vacuum tubes or thermionic valves, and low-pressure gas-filled tubes, or discharge tubes. Before the advent of semiconductor devices, thousands of tube types were used in consumer electronics.

  5. Vacuum bag - Wikipedia

    en.wikipedia.org/wiki/Vacuum_bag

    Vacuum bag may refer to: Vacuum packing of vacuum-sealed bags; Vacuum bag moulding; The dustbag of a Vacuum cleaner This page was last edited on 7 ...

  6. Labyrinth seal - Wikipedia

    en.wikipedia.org/wiki/Labyrinth_seal

    Labyrinth seals are also found on pistons, which use them to store oil and seal against high pressure during compression and power strokes, as well as on non-rotating shafts. In these applications, it is the long and difficult path and the formation of controlled fluid vortices plus some limited contact-sealing action that creates the seal.

  7. Bernina International - Wikipedia

    en.wikipedia.org/wiki/Bernina_International

    Bernina International AG is a privately owned international manufacturer of sewing and embroidery systems. The company was founded in Steckborn, Switzerland, and develops, manufactures, and sells goods and services for the textile market, primarily household sewing-related products in the fields of embroidery, quilting, home textiles, garment sewing, and crafting.

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