Vacuum Directory

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home.howstuffworks.com: Howstuffworks "How Thermoses (Vacuum Flasks) Work"
How can the same device keep hot things hot and cold things cold? Find out what goes on inside a Thermos!
Keywords: cold , conduction , dewar , heat , heat transfer , hot , how does a thermos work
home.howstuffworks.com/thermos.htm

mcnallyinstitute.com: Mc Nally Institute
An excellent resource with enormous amount of information for advanced vacuum users about pumps and seals (troubleshooting, specifications etc.)
Keywords: centrifugal , mcnally , mechanical seal , pump , pumps , seal , seal troubleshooting
www.mcnallyinstitute.com/

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