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🔧 Seal smarter, not harder — the duct seal that’s always ready for action!
RectorSeal 81880 Duct Seal Composite is a 1-pound, gray, non-toxic putty designed for professional-grade sealing in HVAC, plumbing, and electrical applications. It forms a flexible, reusable, air and watertight seal that resists water, alcohol, and mild acids/bases without damaging surfaces or skin. Easy to apply by hand across a wide temperature range, it’s the go-to solution for blocking drafts and protecting conduits with trusted industry reliability.
| ASIN | B008A3UG94 |
| Are Batteries Included | No |
| Brand | Rectorseal |
| Color | gray |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,356) |
| Date First Available | September 12, 2015 |
| Item Weight | 449 g |
| Material | putty |
| Model Number | 81880 |
| Name List for Name Plates | 1 lb |
| Product Dimensions | 16.51 x 7.62 x 7.62 cm; 449 g |
| Quantity | 1 |
R**R
was easy to use for putting around pipes coming out of fridges
A**A
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.
M**E
Good
S**E
Works very well and shipped when stated. Would recommend to anyone!
P**Y
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.
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