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• s  not allowing air or gas to pass in or out

• They put oil of cloves vapor (attractive to cockroaches) behind a gas-tight window of material transparent to infrared.
• Hackenberg is a marvel of underground mechanics, equivalent to ten dreadnaughts buried in a mountain, connected by poison-gas-tight tunnels and served by miles of subterranean .

• airtight
• air-tight

News & Articles

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• Archer launches STORMLOCK-ISO14310 V0 rated gas-tight storm plug technology for the Gulf of Mexico.
  NEW ORLEANS, Sept. 30, 2013 /PRNewswire/ -- Archer, the global oilfield service provider, has released STORMLOCK—an ISO 14310 V0-rated, gas-tight storm plug specifically designed for suspension operations ...
  Sept. 30, 2013 - PR Newswire via Yahoo! Finance
• SPE 2013: Archer shows new GoM storm plug
  NEW ORLEANS – A new storm plug from Archer is showing at the 2013 SPE annual meeting. STORMLOCK is an ISO 14310 V0-rated gas-tight storm plug for the Gulf of Mexico, says Archer.
  Sept. 30, 2013 - Offshore Magazine