🛠️ Seal smarter, not harder — the tradesman’s secret weapon!
Rectorseal 81881 is a 5-pound gray duct seal compound designed for professional HVAC, plumbing, and electrical use. This soft, non-toxic putty forms reusable, airtight, and watertight seals on clean, dry surfaces, functioning reliably between 25°F and 120°F. Resistant to water, alcohol, and mild acids, it’s safe on metals and plastics, asbestos-free, and paint-ready immediately after application.
| Brand | Rectorseal |
| Item Weight | 16 ounces |
| Item dimensions L x W x H | 12 x 3 x 2.5 inches |
| Compatible Material | Metal |
| Item Form | Paste |
| UPC | 021449818810 |
| Unit Count | 1.0 Count |
| Style | 5 lb |
| Global Trade Identification Number | 00021449818810 |
| Number of Items | 1 |
| Color | Gray |
| Manufacturer | The Rectorseal Corporation |
| Part Number | 81881 |
| Item Weight | 1 pounds |
| Product Dimensions | 12 x 3 x 2.5 inches |
| Country of Origin | China |
| Item model number | 81881 |
| Item Package Quantity | 1 |
| Included Components | Duct Seal |
| Batteries Included? | No |
| Batteries Required? | No |
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.
S**M
Good product!
Used putty to fill in hole where central A/C hose runs into house, and it worked like a charm. Best of all its weather resistant and easy to mold.
T**Y
Sticks to paper
Does anyone else have trouble getting it unstuck from the plastic wrapping? It's my only complaint. It can be a real PIA!
K**Y
Best seal ever!!
I really like this seal it is very easy to form and mount in place I'm very pleased with the outcome I would definitely purchase this again.
L**U
A lot For The Price
Great price on this sealant.
E**D
Great product
Awesome product for my needs!! I have a sliding glass door with poor installation. I'm using it as a weather stripping agent around the frame. I'm hoping this will help the cold from coming in and keep cool air from going out in the summer's.
Trustpilot
1 month ago
1 month ago
