---
product_id: 725124157
title: "Rectorseal 81880 1-pound Duct Seal Composite"
brand: "rectorseal"
price: "$69"
currency: NZD
in_stock: false
reviews_count: 5
category: "Rectorseal"
url: https://www.desertcart.nz/products/725124157-rectorseal-81880-1-pound-duct-seal-composite
store_origin: NZ
region: New Zealand
---

# Air & watertight seal Works from 25°F to 120°F 1 lb versatile putty Rectorseal 81880 1-pound Duct Seal Composite

**Brand:** rectorseal
**Price:** $69
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Seal smarter, not harder — the duct seal that’s always ready for action!

## Quick Answers

- **What is this?** Rectorseal 81880 1-pound Duct Seal Composite by rectorseal
- **How much does it cost?** $69 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/725124157-rectorseal-81880-1-pound-duct-seal-composite)

## 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

- • **Seal Like a Pro:** Creates a reliable air and water-tight barrier, blocking drafts and moisture effortlessly.
- • **Mold It Your Way:** Soft, reusable putty that adapts to any shape for a perfect fit every time.
- • **All-Weather Ready:** Performs flawlessly from chilly 25°F to warm 120°F environments—no cracking or drying out.
- • **Safe & Skin-Friendly:** Non-toxic, asbestos-free formula that won’t irritate skin or corrode metals.
- • **Trusted Industry Standard:** Preferred by HVAC, plumbing, and electrical pros for durable, high-quality sealing.

## Overview

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.

## Description

RectorSeal Duct Seal Compound is a grey, soft, non-toxic, putty type compound that adheres to most clean, dry surfaces. Duct sealant compound like putty is easy to use and can be applied by hand from -3.9 °C to 100 °F. Duct Seal creates an air/water tight seal. Resistant to water, alcohol, weak acid and bases Duct seal compound is asbestos free. It will not scratch plastic material, corrode metal or adversely affect human skin. Duct Seal Compound; Grey Color and Putty Like ; Non-Corrosive and Non-Irritating Can be manually shaped to any shape and reused as needed. Many uses for HVAC/R, plumbing, metalwork, and great general purpose sealant throughout the home. Ready to apply and will not bleed through dry paint film. For merchants: RectorSeal is recognized as a leading provider of high quality solutions for professional industries that provide service to the Heater, Ventilation, Air Conditioning (HVAC/R), Plumbing, Electrical and Construction markets.

Review: was easy to use for putting around pipes coming out of fridges
Review: 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.

## Features

- USES: Rectorseal Duct Seal Compound is a grey, soft, non-toxic, putty type compound that adheres to most clean and dry surfaces. Duct seals are hand molded to any shape and can be reused if needed
- EASY TO USE: The duct sealant compound like putty is easy to use and can be applied by hand from 25 degrees to 120 degrees Fahrenheit. Applies to electrical conduit ends and boxes, flashing, service master entries
- Excellent formula: duct seal creates an air and watertight seal; resistant to water, alcohol, gentle acid and base; duct seal compound is asbestofree; will not scratch plastic materials, corrode metal or cause adverse effects on human skin
- Specifications: Duct Seal Compound; Gray Color and Putty Like ; Non-Corrosive and Non-Irritating; Can be manually shaped to any shape and reused as needed, many uses for hvac/r, plumbing, metalwork, and great general purpose sealant around the home
- For merchants: RectorSeal is recognized as a leading provider of high quality solutions for professional industries that provide service to the Heater, Ventilation, Air Conditioning (HVAC/R), Plumbing, Electrical and Construction markets

## Technical Specifications

| Specification | Value |
|---------------|-------|
| 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 |

## Product Details

- **Brand:** Rectorseal
- **Item dimensions L x W x H:** 16.5 x 7.6 x 7.6 cm
- **Material:** putty
- **Style:** 1 lb
- **Water Resistance Level:** Water Resistant

## Images

![Rectorseal 81880 1-pound Duct Seal Composite - Image 1](https://m.media-amazon.com/images/I/314ms-94PFL.jpg)
![Rectorseal 81880 1-pound Duct Seal Composite - Image 2](https://m.media-amazon.com/images/I/31w+-RQER8L.jpg)
![Rectorseal 81880 1-pound Duct Seal Composite - Image 3](https://m.media-amazon.com/images/I/41UF8QG4P4L.jpg)
![Rectorseal 81880 1-pound Duct Seal Composite - Image 4](https://m.media-amazon.com/images/I/51CWERSfKML.jpg)
![Rectorseal 81880 1-pound Duct Seal Composite - Image 5](https://m.media-amazon.com/images/I/51vrjJ9mAYL.jpg)

## 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

### ⭐⭐⭐⭐⭐ Review
*by R***R on January 21, 2025*

was easy to use for putting around pipes coming out of fridges

### ⭐⭐⭐⭐⭐ Review
*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.

### ⭐⭐⭐⭐ Review
*by M***E on July 5, 2024*

Good

## 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 New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-06*