Wiktionary
a. sealed with an airtight hermetic seal
Usage examples of "hermetically sealed".
And anyway, the main doors are closed and the Womb is hermetically sealed in the event of the next dawn bringing the ionization effect.
He let Mali lead him under the hermetically sealed dome and into the radiant heat of the staging center.
We might test it out by taking the hermetically sealed chamber as an example, because this situation has been under a hotter fire than any other on the grounds of being unconvincing.
Mechanically he lifted his feet in the right spots in order to step over the high thresholds of the separating walls that could be hermetically sealed off, until finally he caught sight of the shadows of the crew working at the main reactor.
Nowadays this is cheap and easy, but in the technological regime that prevailed in the early 1980s, the only realistic way to do it was to build the motherboard (which contained the CPU) and the video system (which contained the memory that was mapped onto the screen) as a tightly integrated whole--hence the single, hermetically sealed case that made the Macintosh so distinctive.
As if a cold wind had blown through the hermetically sealed chamber, Parry hugged himself, trembling.
It's hermetically sealed, so there's no danger of anything you hold dear being sucked.
The steel lids of both hatches, hermetically sealed during the space flight, were now wide-open.
He met each day as if life-was-a-game and games-were-life, and the reasons for doing certain things were hermetically sealed and buried inside his head.