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3D3DAircraft emergency oxygen system.
This unit is designed to supply oxygen for about 5 minutes through a hood you put over your head. It could be a chemical oxygen generator or there could be a small high-pressure tank inside, I'm not sure which and I don't want to open the sealed pouch to find out.
Source: eBay seller rustnstuf
Contributor: Theodore Gray
Acquired: 23 March, 2004
Text Updated: 11 March, 2007
Price: $20
Size: 9"
Purity: 90%
Sample Group: Medical