Duct Seal Putty

  Duct seal putty is a gray, permanently soft, non-toxic compound used to seal out air, moisture, dust, and other contaminants. It adheres well to most clean, dry surfaces and doesn't dry out, corrode metals, or react with plastic materials. It also has no adverse effect on human skin and is non-toxic. Applications Rainbow Duct Seal Putty is used primarily by the building industry, and specifically by the electrical trade, to seal around electrical boxes, flashings, service mast entries, and more. It can be shaped by hand to any form and reused if necessary. This duct seal compound has countless other applications in the refrigeration, heating and cooling, plumbing, and metal fabrication fields. It also serves as an excellent general-purpose sealant around the home. The putty may be painted immediately after application and will not bleed through the dry paint. Features & Benefits FDA Approved: Rainbow Duct Seal Putty is composed of materials that meet FDA standards as listed in