Vacuum seal foil. | |||
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Vacuum seal foil. This very soft indium foil is used to create seals between glass components in high-vacuum systems. The indium is soft enough to deform into any pits and irregularities in the glass just like a rubber seal would. But unlike rubber, indium doesn't give off all sorts of vapors and leak like a sieve. ("Leak like a sieve" being a relative term: In most applications rubber would be considered airtight, but some air and moisture does still make it through, and when you're trying to create a really good vacuum it would be completely inadequate.) Source: Ethan Currens Contributor: Ethan Currens Acquired: 30 October, 2006 Text Updated: 19 November, 2007 Price: Donated Size: 2" Purity: 99% | |||
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