DiversiGum Duct Sealing Compound - DiversiGum Duct Sealing Compound is non-hardening DiversiGum Duct Sealing Compound 1 Pound Slug features include:For plugging openings through foundations or around refrigeration tube entryNon-hardeningOrder Qty of 1 = 1 lbBelow is more info on our DiversiGum Duct Sealing Compound: