Sealer is used primarily by the building and specifically by the electrical trade to seal around junction boxes, flashing, and service mast entries, etc. It can be shaped by hand to any form and reused if necessary. Duct seal has countless other applications in the refrigeration, heating and cooling, plumbing and metal fabrication fields, as well as being an excellent general purpose sealant around the home. Duct seal may be painted immediately after application and will not bleed through the dry paint film.
This asbestos-free sealer is a gray, permanently soft, non toxic, non-volatile compound which will adhere to most clean, dry surfaces. It will not adversely affect other plastic materials or corrode metals and has no adverse effect on human skin.