A seal that prevents penetration of water or vapor. Modern pulse generators have metallic cases which are sealed by welding, so that no fluid can enter the device. If hermeticity is lost, fluid entering the pulse generator case could potentially cause a short circuit or abrupt battery failure.
HTS wire can be hermetically sealed to prevent ballooning issues (see Ballooning). To establish a hermetic seal, American Superconductor has created a special lamination technique. This HTS Hermetic Wire prevents liquid nitrogen from entering the system even under a pressurized environment.
a coat applied in the final stage of thermal processing to seal the ceramic package and to protect the device from the external environment.
Completely sealed against external substances such as liquids and gases.
A mechanical or physical closure that is impervious to moisture or gas, including air.
Hermetically sealed connectors provide contacts bonded to the connector by glass. They permit maximum leakage rate of gas through the connector of 1.0 micron ft/hr at one atmosphere pressure for special applications.
An ultrasonically welded seal that is air and water tight under pressure.
Being impervious to external influences. Typically associated with the sealing of a package so that oxygen, moisture, and other outside environments cannot enter the package.
A device which is sealed against entrance of atmospheric contaminants (moisture, dust, etc.).
A seal that will exclude air and be leak-proof.
A seal that will exclude air and will be gas tight at normal temperatures and atmospheric pressures.
A gas tight seal from the environment. Sealing is done via a gas-to-metal seal. /\ I/O: Input / output.
SEE: Hermetically Sealed Device.
100% sealed, insulated glass units must be completely sealed to prevent moisture from forming on the unit's inner surfaces. The majority of all warranty calls on insulated glass units are due to improper application of edge sealants, therefore extreme care must be taken as this process occurs.
Vacuum seal between panes of a double-paned window, i.e. insulated glass unit or IGU. Failure of a hermetic seal causes permanent fogging between the panels of the IGU.
An air-tight seal. In photoelectrics, the lens assemblies of some sensors have hermetic seals to exclude the entrance of air and water behind the lens, thereby preventing fogging of the inner surface of the lens.
Hermetically sealed connectors are usually multiple contact connectors where the contacts are bonded to the connector by glass or other materials, making them air tight.
