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2. Vacuum packing - Wikipedia

   en.wikipedia.org/wiki/Vacuum_packing

   Rotary belt type vacuum packaging machine or vacuum sealer features the same function as the double-chamber vacuum packaging machine as a 'vacuum bag sealer'. But the rotary belt vacuum packaging machine is more convenient, as the belt rotates automatically while the bags are placed to the sealing bar and vacuum sealing process completed.

3. Vacuum chamber - Wikipedia

   en.wikipedia.org/wiki/Vacuum_chamber

   A vacuum chamber is a rigid enclosure from which air and other gases are removed by a vacuum pump. This results in a low- pressure environment within the chamber, commonly referred to as a vacuum . A vacuum environment allows researchers to conduct physical experiments or to test mechanical devices which must operate in outer space (for example ...

4. Materials for use in vacuum - Wikipedia

   en.wikipedia.org/wiki/Materials_for_use_in_vacuum

   A better choice for vacuum systems is the tin-silver eutectic, Sn95Ag5 (Sn-Ag eutectic is actually 96.5-3.5); its melting point of 230 °C (446 °F) allows bakeout up to 200 °C (392 °F). A similar 95-5 alloy, Sn95Sb5, is unsuitable as antimony has similar vapor pressure as lead. Take care to remove flux residues.

5. Vacuum grease - Wikipedia

   en.wikipedia.org/wiki/Vacuum_grease

   Vacuum grease is a lubricant with low volatility and is used for applications in low pressure environments. Lubricants with higher volatility would evaporate, causing two problems: Lubricants with higher volatility would evaporate, causing two problems:

6. These are the best Labor Day vacuum deals from Dyson ... - AOL

   www.aol.com/lifestyle/these-are-the-best-labor...

   This Shark Navigator vacuum holds an impressive 4.4-star rating after more than 105,000 reviews, and during Labor Day, it’s $40 off (only $160). It’s made with pet owners in mind, so if you ...

7. Deaerator - Wikipedia

   en.wikipedia.org/wiki/Deaerator

   Vacuum deaerators are also used in the petrochemical field. [5] In 1921 a tank with vacuum pump for removing gases was used in Pittsburgh. [23] In 1934 and 1940 a tank with vacuum pump for removing gases were used in Indiana. [24] [25] Vacuum deaerators can be rubber lined on the inside to protect the steel heads and shell from corrosion. [26]