Gardner Bender DS-530 Duct Seal, 5-Pound Pug
Duct Seal Compound. Seals conduit openings against drafts, dust, moisture and noise. Protects terminal boxes, pot heads and bushings from corrosive elements. Deadens switch gear panel noise. Dough-like compound is easily “thumbed” over holes and gaps. Will not harden or form a skin under normal conditions.