🛠️ Seal smarter, not harder — the duct seal that works as hard as you do!
Rectorseal 81880 is a 1-pound gray duct seal compound designed for professional-grade sealing. Its soft, non-toxic putty formula creates durable, water- and chemical-resistant seals on a variety of surfaces. Moldable and reusable, it’s ideal for HVAC, plumbing, electrical, and general construction applications, trusted by tradesmen for its reliability and safety.
| Material | Putty |
| Brand | Rectorseal |
| Style | 1 lb |
| Item dimensions L x W x H | 6.5 x 3 x 3 inches |
| Compatible Material | Metal |
| Water Resistance Level | Water Resistant |
| Item Form | Putty |
| UPC | 021449818803 |
| Unit Count | 16.0 Ounce |
| Global Trade Identification Number | 00021449818803 |
| Number of Items | 1 |
| Color | Gray |
| Surface Recommendation | Various surfaces |
| Manufacturer | The Rectorseal Corporation |
| Part Number | 81880 |
| Item Weight | 15.8 ounces |
| Product Dimensions | 6.5 x 3 x 3 inches |
| Country of Origin | China |
| Item model number | 81880 |
| Size | 1 Pound (Pack of 1) |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Special Features | Non-toxic |
| Included Components | Duct Seal Compound |
| Batteries Included? | No |
| Batteries Required? | No |
J**D
Does What It's Supposed to Do
Great stuff. Does what it says it's for. For years I couldn't figure out what was used on the top of my outdoor electrical box. Thanks to AI, I took a picture and it suggested this and what do you know, it was. I had never tried to take off the older cracking duct seal because I thought it was a hardened putty and didn't want to disturb it. I'm pretty sure it was this exact product because after at least 17 years since I bought the house of being on there it was still pliable, and I could have just remolded it around the conduit to fix the cracking. Amazing if it was the same product which again appeared to be so.
A**R
5 star
worked great for my kayak fish finder
A**R
Easy to use and mold to fit
Sealed the hole perfectly
L**.
It was ok
A little hard
C**S
Very easy to use.
Sealed open area easily
A**R
Works GREAT!
I used this for a roll around window AC that had some little holes of light coming through. This product worked perfect and easy to apply and use.
R**N
Easy to work with and gets the job done!
Installed a couple mini splits this summer and it came with putty however I didn't have enough to fill up the hole so i purchased these and this is perfect, it's moldable and pliable without breaking. Easy to work with, water resistance and hopefully will help with the insulation.
C**Y
Been looking for this
This thing is exactly what I needed to seal a gap between floor end and outer front shelf of my camper. The gap is hidden inside a closed compartment in the storage, but since I've removed a wall that separated this compartment and the storage space, I needed to make sure no dust or bugs would come in. Worked as planned, it stays in place and you can always push it further for more adhesion or add more if needed. Great solution for that issue I had.
Trustpilot
2 weeks ago
3 days ago
