Answer: caulks

AnswerCrossword Clue
CAULKSMakes watertight
CAULKSFixes leaky boat seams
CAULKSPrevents leakage, perhaps
CAULKSMakes airtight
CAULKSSeals cracks
CAULKSMakes watertight, in a way
CAULKSSeals around a bathtub
CAULKSFills in the gaps?
caulksCAULK, to make the seams of a ship watertight, also CALK
caulksmaterial used to caulk seams
caulksto fill the seams of to keep water or air out