sealant

Noun

seal=ant

WORDNET DICTIONARY

sealant(n = noun.substance) sealer - a kind of sealing material that is used to form a hard coating on a porous surface (as a coat of paint or varnish used to size a surface);

is a kind of sealing material

has particulars: caulk, caulking

Derived forms verb seal₅, verb seal₂, verb seal₁

sealant, n. material for sealing, esp. to make something airtight or watertight.