Ideal Industries Duct Seal

Seals Gaps or Holes Around Electrical Boxes, Flashing and More

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What's special about this sealant?

  • Seals openings and holes around electrical boxes, flashing, or cable entrances/exits in walls to prevent electrical hazards
  • Soft and pliable, so it can be manipulated to fit odd-shaped gaps
  • Non-corrosive; will not adversely affect plastic, PVC, or metals
  • High flash point of 590° F (310° C) to protect from accidental electrical fires
  • Click for More Features
UL ClassifiedMade in USA

With Duct Seal by Ideal Industries, you can close oddly shaped holes or gaps with ease. Soft, pliable, non-toxic and paintable, this sealant is great for refrigeration, heating and cooling, plumbing and more, and will not corrode metal or plastic.


Part #DescriptionSizeColorPrice
ID-31-601Duct Seal Block1 lbsGray
ID-31-605Duct Seal Block5 lbsGray
  • Since this sealant is soft and flexible, it can be reused time and again which will helps protect the environment
  • Non-toxic compound will not harm installers even without gloves
  • Can be painted immediately after application to blend in with decor
  • Can also be used in other applications such as:
    • Refrigeration
    • Heating and Cooling
    • Plumbing
  • UL Classified
  • Made in the USA USA
PART # ID-31-601 ID-31-605
Paintable YES YES
Non Toxic YES YES
Material Calcium Carbonate
Magnesium Aluminum Silicate
Crystal Quartz Silica
Butene Polymer
Synthetic Polymer
Carbon Black
Cellulose Fiber
Aluminum Silicate
Tall Oil Rosin
Naphthenic Wax
Chemical Resistance Resistant to water, alcohols, mild acids and bases
Chemical Description Butyl rubber composite






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Questions & Answers


is this product waterproof - ID-31-601 is this product waterproof when used to seal ducts in manholes

Asked by Anonymous user on

  • - Thank you for your question. While it is listed as water resistant, water proofing would depend on the quality of the installation which is not something we can claim.

    Fernando M. on

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