---
product_id: 30987123
title: ""
brand: "rectorseal"
price: "€ 16.82"
currency: EUR
in_stock: false
reviews_count: 13
url: https://www.desertcart.com.cy/products/30987123-
store_origin: CY
region: Cyprus
---

# Water & air tight, resistant to mild acids Effective application range 25°F–120°F Soft, moldable putty for custom sealing 

**Brand:** rectorseal
**Price:** € 16.82
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Seal smarter, not harder — the pro’s choice for airtight perfection!

## Quick Answers

- **What is this?**  by rectorseal
- **How much does it cost?** € 16.82 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/30987123-)

## Best For

- rectorseal enthusiasts

## Why This Product

- Trusted rectorseal brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safe & Smart:** Non-toxic, asbestos-free formula that won’t corrode metals or irritate skin—professional grade peace of mind.
- • **Mold It Your Way:** Hand-moldable, reusable putty adapts perfectly to any surface or shape.
- • **Paint-Ready Finish:** Can be painted immediately after application without bleeding through, blending seamlessly into your project.
- • **Seal with Confidence:** Creates a durable, air- and water-tight barrier that stands up to water, alcohol, and mild acids.
- • **Effortless Application:** Works smoothly from chilly 25°F to warm 120°F environments—no special tools needed.

## Overview

RectorSeal Duct Seal 81880 is a versatile, gray putty compound designed for HVAC, plumbing, and metal fabrication professionals. It offers a reusable, non-toxic, and asbestos-free seal that adheres to most clean, dry surfaces. With a wide application temperature range (25°F–120°F), it forms a water- and air-tight barrier resistant to mild acids and alcohols. Safe on plastics and metals, it can be hand-shaped and painted immediately, making it an essential, reliable sealant for tradesmen and DIY pros alike.

## Description

Product Description RectorSeal Duct Seal Compound is a gray, soft, non-toxic, putty-type compound that adheres to most clean dry surfaces. The putty like duct sealant compound is easy to use and can be hand applied from 25°F to 120°F. Duct Seal creates an air and water tight seal. Resistant to water, alcohol, and mild acids and bases. Duct Seal Compound is asbestos-free. It will not damage plastic materials, corrode metals, or have adverse effect on human skin. Duct Seal compound; grey in color and putty like; non-corrosive and non-irritant. Can be hand-shaped to any form and reused if necessary, has many applications in HVAC/R, plumbing, metal fabrication, and a superb general purpose sealant around the home. May be painted immediately after applying and won't bleed through dry paint film. FOR THE TRADESMAN: RectorSeal is recognized as a leading provider of quality solutions for the professional trades serving heating, ventilation, and air conditioning (HVAC/R), plumbing, electrical, and construction markets. From the Manufacturer RectorSeal Duct Seal Compound is a gray, permanently soft, non-toxic, putty type compound which adheres to most clean, dry surfaces. It is designed to be used when sealing around the ends of electrical conduit and boxes. 10-Pound.

Review: 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.
Review: 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.

## Features

- APPLICATION: Rectorseal duct seal compound is a gray, soft, non-toxic, putty-type compound that adheres to most clean dry surfaces; Duct Seal can be hand-molded to any form and reused if necessary
- EASY TO USE: The putty like duct sealant compound is easy to use and can be hand applied from 25°f to 120°f; can be applied to electrical conduit ends and boxes, flashings, and service mast entries
- SUPERIOR FORMULA: Duct seal creates an air and water tight seal; resistant to water, alcohol, and mild acids and bases; duct seal compound is asbestos-free; it will not damage plastic materials, corrode metals, or have adverse effect on human skin
- SPECIFICATIONS: Duct seal compound; grey in color and putty like; non-corrosive and non-irritant; can be hand-shaped to any form and reused if necessary, has many applications in hvac/r, plumbing, metal fabrication, and a superb general purpose sealant around the home; may be painted immediately after applying and won't bleed through dry paint film
- FOR THE TRADESMAN: RectorSeal is recognized as a leading provider of quality solutions for the professional trades serving heating, ventilation, and air conditioning (HVAC/R), plumbing, electrical, and construction markets

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008A3UG94 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #4,201 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #8 in Hardware Sealers |
| Brand | Rectorseal |
| Color | Gray |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,687) |
| 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 |

## Product Details

- **Brand:** Rectorseal
- **Item dimensions L x W x H:** 6.5 x 3 x 3 inches
- **Material:** Putty
- **Style:** 1 lb
- **Water Resistance Level:** Water Resistant

## Images

![ - Image 1](https://m.media-amazon.com/images/I/51CWERSfKML.jpg)
![ - Image 2](https://m.media-amazon.com/images/I/61uaHhHi9ML.jpg)
![ - Image 3](https://m.media-amazon.com/images/I/81EGCVGYIXL.jpg)
![ - Image 4](https://m.media-amazon.com/images/I/91v-rpEPXCL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Is it paintable?**
A: Cannot say. I bought it as a waterproof sealant and for this purpose it works perfectly.

**Q: Is this for 1 lb? Or for 10?**
A: 1 Lb. Was more than enough with plenty left over for other jobs

**Q: Can this be used to patch a hole in the wall around stove gas pipe?**
A: Are you talking about a gas line coming into the stove, I’d say yes it can be. If you’re talking about the actual stove pipe that gets hot then no.

**Q: Would this work to fill a 2 inch hole with electrical wires coming through it that is immersed in hot water?**
A: Yes, the only limit to this material is your wallet and imagination,

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product to have around
*by A***A on December 11, 2025*

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.

### ⭐⭐⭐⭐⭐ Sealed around my furnace and it did a great job - I think it will last a long time.
*by P***Y on January 14, 2026*

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.

### ⭐⭐⭐⭐⭐ Easy fix
*by T***F on February 6, 2026*

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.

## Frequently Bought Together

- Rectorseal 81880 1-Pound Duct Seal Compound Gray
- Shurtape LS 300 HVAC Line Set Tape, 55m Length x 48mm Width, Black (Pack of 1)
- 3/4" x 6 ft. Elastomeric Pipe Insulation, 1/2" Wall

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---

*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-07*