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🔧 Seal smart, seal strong — the pro’s secret weapon for airtight perfection!
RectorSeal Duct Seal 81880 is a gray, soft, non-toxic putty compound designed for HVAC, plumbing, and metal fabrication sealing. It adheres to most clean, dry surfaces, is reusable, and works effectively between 25°F and 120°F. Resistant to water, alcohol, and mild acids, it creates a durable air- and water-tight seal without damaging plastics or metals. Paintable immediately after application, it’s a trusted, asbestos-free solution favored by professionals for reliable, long-lasting sealing.
| ASIN | B008A3UG94 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #3,917 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #9 in Hardware Sealers |
| Brand | Rectorseal |
| Color | Gray |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,643) |
| Date First Available | April 26, 2012 |
| Global Trade Identification Number | 00021449818803 |
| Included Components | Duct Seal Compound |
| Item Form | Putty |
| Item Package Quantity | 1 |
| Item Weight | 15.8 ounces |
| Item dimensions L x W x H | 6.5 x 3 x 3 inches |
| Item model number | 81880 |
| Manufacturer | The Rectorseal Corporation |
| Material | Putty |
| Number Of Pieces | 1 |
| Number of Items | 1 |
| Part Number | 81880 |
| Product Dimensions | 6.5 x 3 x 3 inches |
| Size | 1 pound (pack of 1) |
| Special Features | Non-toxic |
| Style | 1 lb |
| Surface Recommendation | Adheres to most clean dry surfaces |
| UPC | 021449818803 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Water Resistant |
A**A
Great product to have around
Wow, wish I had known about this product before! I purchased it after searching for a way to seal a draft coming in around an interior water pipe. The stickiness was very good yet it was easy to work with, and it took care of sealing out the cold air coming in around the pipe, I highly recommend this.
P**Y
Sealed around my furnace and it did a great job - I think it will last a long time.
I installed a whole house humidifier (it's dry here in Colorado in the winter) on my furnace and wanted to seal the outside and a certain AI assistant recommended this stuff. It was a good call, I rolled it with my hands into cylinders and put it around the humidifier and the seal is solid and seems like it will last a long time. I am very pleased. It's sticky but not super sticky, pliable but seems like it will stay in place. It doesn't smell much (if at all) and I washed my hands with soap and water and most of it came off with minimal effort.
T**F
Easy fix
Worked well and easy to use. It was just what was needed to repair cracking cement around the exterior hvac condensation vent pipe. Great value.
D**D
Easy application
Worked as expected.
F**R
Nice and sticky!
Sticks well to brick walls without any prior preparations. Very easy to work with!
A**W
As Described / Works Good.
This stuff is pretty soft and easy to install. It's about the same price as the big box stores for the same amount but I didnt have to leave the house and drive all the way to pick it up. So in that sense it saved me a bit of money.
D**D
It duct seal. It works.
Product is as described. Its a lump of dark grey duct seal. Works like playdoh. I used it to "plug" the area around a hot water inlet on my HVAC that was "whistling" due to a poor seal.
G**D
Highly RECOMMEND!!! Great for multiple applications.
Saw a YT video recommending this for outdoor use and they were spot-on. I've used it for multiple applications and I love it.
R**R
was easy to use for putting around pipes coming out of fridges
W**D
تم تجربته على فتحات في جدران الاسمنتيه يقوم باغلاق الفتحه بشكل ممتاز يعمل كانه صلصال وليس ايضا يعمل ايه اضرار ويتحمل الاجواء الخارجيه وبامكانك ازالته في اي وقت
K**W
I used this sealing product around my pipes and vent outside . The previous sealant had cracked and ants were getting inside. It was very easy to use and wasn't messy at all. I had some left over so I put the package into a ziploc bag. It did a great job for me and the price was very reasonable.
M**E
Good
S**E
Works very well and shipped when stated. Would recommend to anyone!
Trustpilot
3 weeks ago
1 week ago