Related Clues:
- Render airtight
- Make a window frame watertight
- Make watertight by sealing joints or seams
- Make boat waterproof by filling seams
- Goop in a gun
- Fill cracks with filler or stopper, say
- Make waterproof
- What holds a screen to a laptop
- Waterproof sealant
- Certain sealant
- Contents of a do-it-yourselfer's gun
- Forestall leaks, in a way
- Make airtight, in a way [4]
- Sealing compound
- Watertight sealant