Gardner Bender Duct Seal Compound

Sealant for Conduit and Electrical Fixtures

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What's special about this sealing compound?

  • Allows you to seal out air, dust, and particles in and around electrical boxes, conduit, and cable tray
  • Never sets and remains permanently soft and pliable, so it can be easily removed and reapplied at any time
  • Can be painted over immediately after application for color coding or matching
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Gardner Bender duct seal putty is the perfect solution for filling voids in your electrical installations. This pliable, easy to use compound is premixed and ready to use right out of the package, which saves valuable time on the jobsite.

Part #DescriptionPackage SizePrice
GB-DS-110NGardner Bender Duct Seal1 lb
GB-DS-530Gardner Bender Duct Seal5 lbs
  • FDA and USDA approved for use in areas where food, poultry and meats are processed
  • Hand moldable, and requires no special tools for application or use
  • Never sets, so it can be easily removed and reapplied at any time
  • Ideal for use in new or retrofit installations
  • Made with non-corrosive materials and is completely safe to handle
  • Available in 1lb and 5lb packages for use on big or small jobs
  • UL Listed - R11374


Ideal for filling spaces in:

  • Electrical Boxes
  • Conduit
  • Metallic and nonmetallic pipes
  • Cables
  • Ducts
  • Refrigeration and cooling applications
  • Plumbing


Base - Non-drying synthetic polymers and oils
Fillers - Saturated mineral fillers and other inert ingredients
Specific Gravity ASTM D71-72 1.65 to 1.7
Cone Penetration ASTM D217-52T Load of 300 gm 5 sec. @ 25° F; 100 - 115mm/10
Temperature Usage Range 25° F to +120° F Recommended
Temperature Tolerance Range -30° F to +175° F Will not slump at +275° F






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