HEATSEAL is a crossword puzzle answer that we have spotted 4 times.
- Protect from the air, in a way
- One way to keep the air out
- Make airtight, in a way
- Make airtight, in a way 
Last Seen In:
- New York Times - July 23, 2017
- New York Times - February 26, 2011
- Washington Post - April 21, 2004
- New York Times - July 05, 2001
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