Rectorseal 81880 1-Pound Duct Seal Compound Gray
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Rectorseal 81880 1-Pound Duct Seal Compound Gray

4.8/5
Product ID: 30987123
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Details

  • Material
    Putty
  • Brand
    Rectorseal
  • Style
    1 lb
  • Item dimensions L x W x H
    6.5 x 3 x 3
  • Compatible Material
    Metal
💧Water & chemical resistant
♻️Reusable & moldable
🛠️1 lb versatile putty

Description

🛡️ Seal smarter, not harder — the pro’s choice for flawless finishes!

  • SAFE SMART - Non-toxic, asbestos-free formula that’s gentle on skin and won’t corrode metals or damage plastics.
  • MOLD IT YOUR WAY - Hand-moldable putty adapts perfectly to any shape or surface for a custom fit every time.
  • PAINT READY FINISH - Can be painted immediately after application without bleeding through, ensuring a flawless professional look.
  • READY WHEN YOU ARE - Works seamlessly from 25°F to 120°F, making it the go-to sealant for any season or job site.
  • SEAL WITH CONFIDENCE - Creates an airtight, watertight barrier that resists water, alcohol, and mild acids—no leaks, no worries.

Rectorseal81880 is a 1-pound gray duct seal compound designed for professional tradesmen. This soft, non-toxic putty seals electrical conduits, HVAC, plumbing, and metal surfaces with a water- and chemical-resistant formula. It’s reusable, moldable by hand, safe on skin and materials, and paint-ready immediately after application, making it an essential, reliable sealant for any project.

Specifications

MaterialPutty
BrandRectorseal
Style1 lb
Item dimensions L x W x H6.5 x 3 x 3 inches
Compatible MaterialMetal
Water Resistance LevelWater Resistant
Item FormPutty
UPC021449818803
Unit Count16.0 Ounce
Global Trade Identification Number00021449818803
Number of Items1
ColorGray
Surface RecommendationVarious surfaces
ManufacturerThe Rectorseal Corporation
Part Number81880
Item Weight15.8 ounces
Product Dimensions6.5 x 3 x 3 inches
Country of OriginChina
Item model number81880
Size1 Pound (Pack of 1)
Item Package Quantity1
Number Of Pieces1
Special FeaturesNon-toxic
Included ComponentsDuct Seal Compound
Batteries Included?No
Batteries Required?No

Have a Question? See What Others Asked

Is it paintable?
Is this for 1 lb? Or for 10?
Can this be used to patch a hole in the wall around stove gas pipe?
Would this work to fill a 2 inch hole with electrical wires coming through it that is immersed in hot water?

Reviews

4.8

All from verified purchases

S**T

Exceptional Value!

After recently residing my house, I needed a block of this material to seal the gas line's service entrance. Although the gap was small enough to seal with a bead of caulk, this stuff is easier and less messy to apply with the same result.Product Quality: It's tough to determine this type of material's quality visually although I've used this material and brand before and it's an excellent, moldable, non-hardening sealant.Product Use: Fresh from the delivery truck in 30 degree weather, the block was stiff, but still moldable. It became increasingly malleable with the rise in indoors temperature, reaching clay-like moldability.Although this material is sticky, it leaves no sticky residue on either hands or applied surfaces.Final Thoughts: If you need to seal the wire or pipe poking through your wall to the great outdoors, this is the stuff to use. It's less messy than caulk, arguably longer lasting, and there's considerably less waste material. Since it's non-hardening, it should last if stored properly.And it's a third of the cost on Amazon as at the big box store! I bought second block "just in case."

V**K

Works well for HVAC sealing.

Works well, sticky but not overly sticky, molds very easily. Used for my HVAC evap to cover the holes that was letting out a ton of air.

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.

B**R

It does the job

I saw someone mention this product for HVAC and after reading the reading the review this product does the job. I posted a before and after picture.

J**N

Versatile and Easy to Use: Great for Sealing Gaps Around the House

The media could not be loaded. I came across this duct seal compound online and figured it would be a good idea to keep a bar in my workshop for future use. At the time, I didn’t have a specific project in mind, but it has already proven its value. I noticed some small gaps around the screens of my raised foundation and decided to give this compound a try to seal them up.It worked perfectly for what I needed. Even though I believe the compound is more commonly used for insulation-related sealing, I was concerned about bugs or small critters getting through those gaps. This sealant applied easily and gave me a solid, secure seal. I haven’t painted over it yet, but visually it looks like it’s holding up well.I ended up using almost a whole bar for this project, but I’m happy with the result and plan to pick up another bar just to have on hand for future repairs or sealing jobs. It’s always handy to have something like this around, and it’s proven to be a versatile solution.

B**S

Outstanding Quality at a Great Price

To prevent water from seeping in along the conduit leading into our house (connecting to our circuit breaker panel), an electrician recently used Rectorseal along the outside of our home. We had a similar issue with our AC line, so I tried using Rectorseal myself. This product is amazing! Super easy to apply and works great, at a very low cost. Rectorseal is sort of like an industrial-strength "Play-Doh". As a duct seal putty, this is a perfect fixer to prevent water (and dirt) from leaking into our basement. Highly recommended!

A**R

Easy to use and mold to fit

Sealed the hole perfectly

S**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.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Rectorseal 81880 1 Pound Duct Seal Compound Gray | Desertcart Spain