Answer: sealup

AnswerCrossword Clue
SEALUPMake hermetic
SEALUPMake airtight
SEALUPClose off, as a tomb
SEALUPClose tightly
SEALUPShrink-wrap, e.g.
SEALUPShrink-wrap
SEALUPClose securely
SEALUPMake watertight, maybe
SEALUPClose tight
SEALUPMake watertight
SEALUPMake airtight, maybe
SEALUP"... your lips . . . ": Shak.
SEALUPThoroughly confine
SEALUPMake airtight, perhaps
SEALUPShut tight