hermetic seal
Completely airtight barrier
A hermetic seal is an airtight closure that prevents gases or liquids from passing through.
The term comes from Hermes Trismegistus, a legendary figure associated with alchemy, whose followers were said to seal vessels by fusing the glass with flame.
Today hermetic seals appear in everything from food packaging to spacecraft components, anywhere complete isolation from the environment is required.
The hermetic seal on the jar kept the contents fresh for months.
Mechanical leak preventer
- O-ringCircular sealing element
- vacuumAbsence of matter
- watertightPrevents liquid from passing
- flangeProjecting attachment rim
sealant · enclosure · containment · casing · lid · jar · canister · chamber
Airtight food preservation
- vacuum-packingPreservation by removing air
- jarringDisturbingly incongruous
- freeze-dryingPreservation through vacuum sublimation
- dehydrationExcessive fluid loss
refrigeration · pickling · archiving · mummification · embalming · laminating · cellaring · freshness
Isolation preventing disease transmission
- containmentPreventing hostile expansion
- insulationThermal transfer prevention
- encapsulationSurrounding on all sides
- confinementState of being restricted
buffer · partition · cleanroom · biohazard · hazmat · decontamination · airlock · segregation
Legendary substance enabling transmutation
- alembicDistillation apparatus
- transmutationComplete change of form
- elixirMythical healing draught
- quintessencePurest embodiment of something
sublimation · distillation · arcanum · vessel · retort · crucible · magnum opus · esoteric
Meant to stay secret
- classifiedRestricted from disclosure
- impenetrableImpossible to pass through
- closedNot accessible now
- inaccessibleCannot be reached
private · exclusive · concealed · guarded · restricted · covert · locked · hidden
gasket
Mechanical leak preventer
- O-ringCircular sealing element
- vacuumAbsence of matter
- watertightPrevents liquid from passing
flange · sealant · enclosure · containment · casing · lid · jar · canister · chamber · vessel
canning
Airtight food preservation
- vacuum-packingPreservation by removing air
- jarringDisturbingly incongruous
- freeze-dryingPreservation through vacuum sublimation
dehydration · refrigeration · pickling · archiving · mummification · embalming · laminating · cellaring · freshness · shelf-life
quarantine
Isolation preventing disease transmission
- containmentPreventing hostile expansion
- insulationThermal transfer prevention
- encapsulationSurrounding on all sides
confinement · buffer · partition · cleanroom · biohazard · hazmat · decontamination · airlock · segregation · barrier
philosopher's stone
Legendary substance enabling transmutation
- alembicDistillation apparatus
- transmutationComplete change of form
- elixirMythical healing draught
quintessence · sublimation · distillation · arcanum · vessel · retort · crucible · magnum opus · esoteric · occult
confidential
Meant to stay secret
- classifiedRestricted from disclosure
- impenetrableImpossible to pass through
- closedNot accessible now
inaccessible · private · exclusive · concealed · guarded · restricted · covert · locked · hidden · compartmentalized
- sealsgasket, o-ring, O-ring, pinniped, walrus
- alchemyalchemist, philosopher's stone, transmutation, elixir, elixir of life
- sealantssealant, caulk, silicone sealant, silicone caulk, bathroom caulk
- lids and capslid, top, cap, bottle cap, screw cap
- protectionbodyguard, armor, gloves, security guard, shield
- occultwitchcraft, sorcery, necromancy, black magic, tarot