sealed up

seal up

To close something and bind the seals so it does not reopen. A noun or pronoun can be used between "seal" and "up." They're going to seal up the door leading into the cellar. Would you please seal this box up for me so I can get it in the mail?
See also: seal, up

sealed (up)

mod. settled; secured; cinched. The matter was sealed by Monday morning.
See also: seal, up
References in periodicals archive ?
New houses are really sealed up tight, so interior air quality is very important" says Pruitt.
Sealed UPS batteries typically last five years and need to be recycled.