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RectorSeal Duct Seal Compound is a gray, soft, non-toxic, putty-type compound that adheres to most clean dry surfaces. Duct Seal Compound is asbestos-free; it will not damage plastic materials, corrode metals, or have adverse effect on human skin.



  • Can be hand applied from 25°F to 120°F
  • Air/water-tight seal
  • Resistant to water, alcohols, mild acids & bases
  • Non-corrosive / non-irritant

Duct Seal 1 lb.

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