---
product_id: 24733095
title: "Duct Seal 81881 Duct Seal Compound, Easy Application, HVAC, 5 lb"
brand: "rectorseal"
price: "E£ 7891"
currency: EGP
in_stock: true
reviews_count: 13
category: "Rectorseal"
url: https://www.desertcart.com.eg/products/24733095-duct-seal-81881-duct-seal-compound-easy-application-hvac-5
store_origin: EG
region: Egypt
---

# Water & chemical resistant Works 25°F-120°F 5 lb reusable putty Duct Seal 81881 Duct Seal Compound, Easy Application, HVAC, 5 lb

**Brand:** rectorseal
**Price:** E£ 7891
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal smart, save energy, and stay ahead of the trades game!

## Quick Answers

- **What is this?** Duct Seal 81881 Duct Seal Compound, Easy Application, HVAC, 5 lb by rectorseal
- **How much does it cost?** E£ 7891 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/24733095-duct-seal-81881-duct-seal-compound-easy-application-hvac-5)

## 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, and gentle on skin and materials
- • **Seal Like a Pro:** Creates airtight, watertight, and chemical-resistant barriers
- • **Moldable Mastery:** Hand-shape to any form, reuse endlessly
- • **Temperature Tough:** Applies easily from chilly 25°F to warm 120°F environments
- • **Paint-Ready Finish:** Apply paint immediately without bleed-through for a flawless look

## Overview

RectorSeal Duct Seal 81881 is a versatile, gray putty compound designed for professional HVAC, plumbing, and electrical sealing. It offers a reusable, non-toxic, and asbestos-free formula that adheres to most clean, dry surfaces, providing a durable air and water-tight seal. Easy to apply across a wide temperature range (25°F-120°F), it resists water, alcohol, and mild acids, and can be painted immediately without bleed-through, making it the go-to 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 25Â°F to 120Â°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.5-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 resued if necessary
- EASY TO USE: The putty like duct sealant compound is easy to use and can be hand applied from 25â°f to 120â°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 | B008A3UG9E |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #19,440 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #186 in Duct Tape |
| Brand | Rectorseal |
| Color | Gray |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,643) |
| Date First Available | July 6, 2013 |
| Global Trade Identification Number | 00021449818810 |
| Included Components | Duct Seal |
| Item Form | Paste |
| Item Package Quantity | 1 |
| Item Weight | 1 pounds |
| Item dimensions L x W x H | 4.5 x 10 x 1.5 inches |
| Item model number | 81881 |
| Manufacturer | The Rectorseal Corporation |
| Material | Synthetic Rubber |
| Number of Items | 1 |
| Part Number | 81881 |
| Product Dimensions | 4.5 x 10 x 1.5 inches |
| Size | (Pack of 1) |
| Style | Putty |
| UPC | 021449818810 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Rectorseal
- **Item Weight:** 1 Pounds
- **Item dimensions L x W x H:** 4.5 x 10 x 1.5 inches
- **Material:** Synthetic Rubber
- **Style:** Putty

## Images

![Duct Seal 81881 Duct Seal Compound, Easy Application, HVAC, 5 lb - Image 1](https://m.media-amazon.com/images/I/51wNMjdUSlL.jpg)

## Available Options

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

## Questions & Answers

**Q: is it removable?**
A: Yes it can be removed. It is like a thick putty. It can be molded and and pushed into cracks.  It's a great sealer.

**Q: Will this work ok for furnace sheet metal ducts? They get to maybe 150F.**
A: I did not buy this for any HVAC repair. I bought it for a metal trap for a pellet gun to silence the noise from pellets hitting the metal.

## 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.

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---

*Product available on Desertcart Egypt*
*Store origin: EG*
*Last updated: 2026-03-04*