DC duct sealer is used primarily by the building and specifically by the electrical trade to seal around junction boxes, flashings and service mast entries. It can be shaped by hand to any form and reused if necessary. DC duct seal has countless other applications in the refrigeration, heating and cooling, plumbing and metal-fabrication fields. It is an excellent general purpose sealant around the home.
Appleton's NEER Duct Sealing Compound Catalog Page
O-Z/Gedney's NEER Duct Sealing Compound Catalog Page