IDEAL 31-601 Duct Seal Compound (1 lb) – Non-Hardening Electrical Sealing Putty

Seal gaps fast with IDEAL 31-601 Duct Seal.
A non-hardening, moldable sealing compound for blocking drafts, dust, moisture, odors, and pests around conduit, service entrances, and wall penetrations. Easy to shape, easy to rework.

• Non-hardening / reusable: stays pliable so you can remove and re-apply

• Moldable seal: forms around conduit, cable, and irregular openings

• Helps block drafts, dust, odors, and pests at wall/ceiling penetrations

• Great for service entrances & junction boxes (where permitted)

• Fast install: no cure time, no mixing

Why electricians keep duct seal on the truck

If you’re sealing around conduit, service entrances, or wall penetrations, you want something that’s fast, reliable, and doesn’t turn into a rock. IDEAL 31-601 Duct Seal stays moldable so you can get a tight seal now—and still remove it later if you need to pull cable or rework an entry point.