/ Thesaurus / S Synonyms of sealing material Find synonyms for: Noun1. sealing material, material, stuffusage: any substance used to seal joints or fill cracks in a porous surfaceWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language