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2. Positive pressure personnel suit - Wikipedia

   en.wikipedia.org/wiki/Positive_pressure...

   The PPPS is a sophisticated variety of personal protective equipment (PPE), a type of hazmat suit, which is air-tight and designed for positive pressure to prevent contamination to the wearer even if the suit becomes damaged. BSL-4 cabinets and "Suit Laboratories" have special engineering and design features to prevent hazardous microorganisms ...

3. 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. Hermetic seals are essential to the correct ...

4. Lye - Wikipedia

   en.wikipedia.org/wiki/Lye

   Accordingly, lye is stored in air-tight (and correspondingly moisture tight) containers. Glass is not a good material to be used for storage as severe alkalis are mildly corrosive to it. Similar to the case of other corrosives, the containers should be labeled to indicate the potential danger of the contents and stored away from children, pets ...

5. Liquid cooling and ventilation garment - Wikipedia

   en.wikipedia.org/wiki/Liquid_cooling_and...

   The return water is cooled by the melting ice and again pumped through the tubes. Regulation of flow is done by varying pump speed or using an adjustable flow valve. Ice storage can be achieved using a belt-pack, a backpack, or a duffel bag, depending on the length of time needed for the cooling system to operate between refilling the ice storage.

6. Mothball - Wikipedia

   en.wikipedia.org/wiki/Mothball

   Mothballs are stored in air-tight bags made of a non-reactive plastic such as polyethylene or polypropylene (other plastics may be degraded or softened). The clothing to be protected should be sealed within airtight containers; otherwise the vapors will tend to escape into the surrounding environment. [1]

7. Resealable packaging - Wikipedia

   en.wikipedia.org/wiki/Resealable_packaging

   Screw caps or other container closures with similar functions; Hook and loop fasteners; Pressure sensitive adhesive strips and tapes; Interlocking plastic strips such as found on Zipper storage bags; Zip packs: resealable packaging with a zip feature that keeps the container airtight.