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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. Vacuum packing - Wikipedia

   en.wikipedia.org/wiki/Vacuum_packing

   This oncoming pressure squeezes all remaining air in the bag. The lid is then opened and the product removed. Double-chamber sealers are typically used for medium-volume packaging, and also have the capability to vacuum seal liquids. The lid generally swings from one side to another, increasing production speed over a single-chamber model.

4. Food packaging - Wikipedia

   en.wikipedia.org/wiki/Food_packaging

   Testing modified atmosphere in a plastic bag of carrots. Food packaging is a packaging system specifically designed for food and represents one of the most important aspects among the processes involved in the food industry, as it provides protection from chemical, biological and physical alterations. [1]

5. Materials for use in vacuum - Wikipedia

   en.wikipedia.org/wiki/Materials_for_use_in_vacuum

   304 stainless steel is a common choice of a stainless steel. 304L stainless steel, a low-carbon variant of 304 steel, is used for ultra-high vacuum systems. 316L stainless steel a low-carbon and low-magnetic stainless steel, used in accelerator technologies. 347 stainless steel does not accept high polish. 321 stainless steel is chosen when low ...

6. Vacuum flask - Wikipedia

   en.wikipedia.org/wiki/Vacuum_flask

   A vacuum flask (also known as a Dewar flask, Dewar bottle or thermos) is an insulating storage vessel that slows the speed at which its contents change in temperature. It greatly lengthens the time over which its contents remain hotter or cooler than the flask's surroundings by trying to be as adiabatic as possible.

7. This popular vitamin C serum is on sale for just $10: '60 is ...

   www.aol.com/lifestyle/this-popular-vitamin-c...

   What reviewers say 💬. With nearly 39,000 Amazon reviewers singing this serum's praises, it's fair to say it's a clear winner. Pros 👍 "This by far has been my favorite vitamin C serum."

8. Ultrasonic machining - Wikipedia

   en.wikipedia.org/wiki/Ultrasonic_machining

   Ultrasonic machining is a subtractive manufacturing process that removes material from the surface of a part through high frequency, low amplitude vibrations of a tool against the material surface in the presence of fine abrasive particles.

9. At least 2 dead after severe weather moved through ...

   www.aol.com/coast-coast-storms-could-bring...

   At least two people have died as severe storms and tornadoes tore through parts of Texas and Mississippi on Saturday, officials said, while a parade of atmospheric river-fueled storms batters the ...