---
product_id: 39580151
title: "Non-Toxic High Temp Mill-Pac Black Sealant | Fireplaces, Wood, Pellet, and Gas Stoves, Direct Vent Systems, Flue Joints | Environmentally Friendly | 1050-Degree (10.3 oz Cartridge)"
brand: "igs industries"
price: "R1228"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Igs Industries"
url: https://www.desertcart.co.za/products/39580151-non-toxic-high-temp-mill-pac-black-sealant-fireplaces-wood
store_origin: ZA
region: South Africa
---

# Non-toxic & eco-friendly 1050°F max temp rating Easy application & cleanup Non-Toxic High Temp Mill-Pac Black Sealant | Fireplaces, Wood, Pellet, and Gas Stoves, Direct Vent Systems, Flue Joints | Environmentally Friendly | 1050-Degree (10.3 oz Cartridge)

**Brand:** igs industries
**Price:** R1228
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal the heat, save the planet, and stay worry-free! 🌿

## Quick Answers

- **What is this?** Non-Toxic High Temp Mill-Pac Black Sealant | Fireplaces, Wood, Pellet, and Gas Stoves, Direct Vent Systems, Flue Joints | Environmentally Friendly | 1050-Degree (10.3 oz Cartridge) by igs industries
- **How much does it cost?** R1228 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/39580151-non-toxic-high-temp-mill-pac-black-sealant-fireplaces-wood)

## Best For

- igs industries enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Conscious Sealant:** Formulated without harmful RCF fibers, ensuring a truly green, non-toxic solution for your home.
- • **Precision Fit Every Time:** Expands to seal rough or misaligned joints, preventing leaks and enhancing appliance efficiency.
- • **Unmatched Heat Resistance:** Withstands continuous temperatures up to 1050°F, perfect for high-temp fireplaces and stoves.
- • **Safe for Modern Gas Appliances:** Won't off-gas like traditional silicones, ideal for direct vent systems with electronic ignition.
- • **Effortless Application & Maintenance:** Smooth application with easy cleanup, reducing soot buildup and extending stove life.

## Overview

IGS Industries’ Mill-Pac Black Sealant is a high-performance, non-toxic, and environmentally friendly sealant designed for fireplaces, wood, pellet, and gas stoves. Rated for continuous use up to 1050°F, it expands to form a durable, airtight seal that resists cracking and erosion. Its organic binding system eliminates harmful fibers, making it safe for modern gas appliances and direct vent systems. Easy to apply and clean, Mill-Pac Black is the trusted choice of top stove manufacturers and eco-conscious professionals alike.

## Description

Non-toxic and organically bound, IGS Industries’ Mill-Pac Black expands to form a tight seal in your fireplace or stove that will provide years of reliable service. Mill-Pac Black will not shrink or crack, and is inert to combustion byproducts. Several major wood, pellet, and gas stove appliance manufacturers specify Mill-Pac Black as their sealant of choice! Mill-Pac Black is formulated using Non-RCF refractory fibers, which eliminates OSHA and EPA concerns with the use of these raw materials. Mill-Pac Black is still rated to a 1050°F (565oC) max continuous operating temperature, and has excellent resistance to erosion by gas or wood combustion byproducts. Since Mill-Pac Black has always been formulated with an organic, non-toxic binding system, it has been considered a green product. With the elimination of RCF fibers, Mill-PAC Black is truly environmentally friendly.

Review: Great flue gasket material - Product was damaged during shipping and leaked out inside packaging. Requested a replacement and it was promptly sent. Good service and product as advertised. Works great and easy to use
Review: works like it is advertised - easy to apply and cure - no instructions were sent with the sealer - having used such a product before i knew to heat cure before having a hot fire. you may like to attach instructions to the tube

## Features

- NON TOXIC & ORGANICALLY BOUND - Formulated with an organic, non-toxic binding system. With the elimination of RCF fibers, Mill-PAC Black is truly environmentally friendly.
- HIGH PERFORMANCE SEALANT - Expands to form a tight seal in your fireplace or stove that will provide years of reliable service.
- BEST FOR GAS APPLIANCES - Mill-Pac will not off-gas like RTV red silicone making it an ideal sealer for direct vent pipe on units with electronic ignition.
- 1050°F HIGH TEMPERATURE - Rated to a 1050°F (565°C) max continuous operating temperature.
- EASY TO USE - Easy application and clean up. Reduces sooting and whiting. Does not bake onto equipment. Conforms to rough or misaligned components.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01L2VWIWI |
| Best Sellers Rank | #56,367 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #44 in Industrial Joint Sealants |
| Brand | IGS Industries |
| Brand Name | IGS Industries |
| Color | Black |
| Compatible Material | Wood |
| Customer Reviews | 4.6 out of 5 stars 155 Reviews |
| Item Form | Liquid |
| Item Weight | 10.3 Ounces |
| Manufacturer | IGS Industries |
| Material | Silicone |
| Material Type | Silicone |
| Style | Compact |
| Style Name | Compact |
| Surface Recommendation | Vent,Wood |
| UPC | 645360706270 |
| Unit Count | 10.3 Ounce |
| Water Resistance Level | Waterproof |

## Product Details

- **Material:** Silicone
- **Brand:** IGS Industries
- **Style:** Compact
- **Item Weight:** 10.3 Ounces
- **Water Resistance Level:** Waterproof

## Images

![Non-Toxic High Temp Mill-Pac Black Sealant | Fireplaces, Wood, Pellet, and Gas Stoves, Direct Vent Systems, Flue Joints | Environmentally Friendly | 1050-Degree (10.3 oz Cartridge) - Image 1](https://m.media-amazon.com/images/I/51KsybyFkpL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great flue gasket material
*by A***R on September 15, 2025*

Product was damaged during shipping and leaked out inside packaging. Requested a replacement and it was promptly sent. Good service and product as advertised. Works great and easy to use

### ⭐⭐⭐⭐⭐ works like it is advertised - easy to apply and cure
*by M***O on December 28, 2023*

no instructions were sent with the sealer - having used such a product before i knew to heat cure before having a hot fire. you may like to attach instructions to the tube

### ⭐⭐⭐⭐⭐ Cartridge temperature
*by B***N on October 24, 2025*

Make sure the cartridge is warm for easy application

## Frequently Bought Together

- Non-Toxic High Temp Mill-Pac Black Sealant | Fireplaces, Wood, Pellet, and Gas Stoves, Direct Vent Systems, Flue Joints | Environmentally Friendly | 1050-Degree (10.3 oz Cartridge)
- Non-Toxic High Temp Mill-Pac Black Sealant | Fireplaces, Wood, Pellet, and Gas Stoves, Direct Vent Systems, Flue Joints | Environmentally Friendly | 1050-Degree (90 ml Squeeze Tube)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-19*