Which vault sealing method uses the air pressure created by placing the dome on the base?

Which vault sealing method uses the air pressure created by placing the dome on the base?

• A. Air Tray
• B. Alternative Container
• C. Drawer
• D. Air Seal

Answer: (D)

This method relies on the air pressure created when the dome is placed on the base. As the dome is seated, it traps and compresses the air between the two surfaces, forming a tight seal around the rim without needing extra hardware. This self-contained pressure seal is what holds the vault closed. The other options don’t use the dome-base air pressure to create the seal—the tray, drawer, and alternative container rely on different mechanisms or components rather than the air trapped by seating the dome.

This method relies on the air pressure created when the dome is placed on the base. As the dome is seated, it traps and compresses the air between the two surfaces, forming a tight seal around the rim without needing extra hardware. This self-contained pressure seal is what holds the vault closed. The other options don’t use the dome-base air pressure to create the seal—the tray, drawer, and alternative container rely on different mechanisms or components rather than the air trapped by seating the dome.