sealed chamber

• airtightImpervious to atmosphere
• vacuumAbsence of matter
• vaultSecure storage chamber
• hermeticImpenetrably closed off
• lockedFastened with a mechanism

pressurized · tomb · capsule · airlock · containment · sterile · crypt · bunker · isolation · gasket · preserve · suffocate · claustrophobic · laboratory · specimen · entombed · pharaoh · secret

• mysteryclue, detective, suspect, clues, sleuth
• burialburial, cremation, interment, grave, entombment
• oxygen-freevacuum, anaerobic, purged, anoxic, hermetic