Welcome to National Flues Ltd! We use cookies to power essential features and personalise your experience, ensuring a smooth, secure, and ever-improving journey on our website. Your privacy is our priority—cookies help us remember your preferences and enhance your visit without compromising your data. By continuing to browse, you agree to our use of cookies as detailed in our Cookie Policy. Enjoy your visit and thank you for choosing us!
Cookie Preferences
We use different types of cookies for various purposes. Please select which you allow:
Envirograf's CLEAR Heat Resistant Sealant stands out as a premier solution for high-temperature sealing, glazing, and bonding. Ideal for firebricks, fireplaces, and various heat-prone installations, this sealant by Envirograf offers reliable performance at extreme temperatures of up to 1300°C. As a ... More...
Envirograf's CLEAR Heat Resistant Sealant stands out as a premier solution for high-temperature sealing, glazing, and bonding. Ideal for firebricks, fireplaces, and various heat-prone installations, this sealant by Envirograf offers reliable performance at extreme temperatures of up to 1300°C. As a trusted product in the heat resistant sealants category, its dual-colour formulation in Black and Clear ensures you find the right match for your design. Explore our full range to find optional accessories and tools that perfectly complement your installation projects. Less...
Hover to Zoom / Click for Gallery
In Stock
At a Glance
- Withstands up to 1300°C
- Available in both Black and Clear variants
- Odourless neutral curing for indoor use
- Non-corrosive to metals
- Bonds to a wide range of substrates without priming
- Ideal for glazing, sealing, bonding, and repairs
- Packaged in a convenient 310ml tube
Now only
£12.99
Including VAT
Buy with confidence. If you find this cheaper within 48 hours of checkout, we'll refund the difference.
×
Email Product
Enter your email address to send the product details:
We Won't Be Beaten On Price
At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:
Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
Operational Efficiency: We have streamlined processes to reduce overhead.
Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.
Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).
“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
The CLEAR Heat Resistant Sealant from Envirograf is a top-of-the-range solution for numerous glazing, sealing, bonding, and repairing tasks. Designed to endure temperatures up to an impressive 1300°C, this versatile sealant is indispensable for ensuring a water and gas-tight seal in high-heat environments. Supplied in convenient 310ml tubes, it’s available in both Black and Clear variants, making it suitable for alkaline substrates such as concrete, mortar, and fibre cement.
Its high-performance and neutral curing system mean that it’s practically odourless, non-corrosive to metals, and can be painted over with both water-based and solvent-based paints. One of the most versatile products in our range, it bonds well to most substrates without the need for priming.
SKU: 93-HTS-ENV-C
Technical Specifications
Maximum Temperature
1300u00b0C
Colour Options
Black, Clear
Tube Size
310ml
Suitable Substrates
Concrete, Mortar, Fibre Cement, Fire-bricks
Curing System
Neutral (odourless)
Paint Compatibility
Water-based and Solvent-based paints
Application
Glazing, Sealing, Bonding, Repair
Before application, ensure that surfaces are clean and free from loose debris. For best results, apply the sealant when the substrate is dry, although it bonds well without priming. Use a suitable applicator or caulking gun to achieve an even bead. Maintain a consistent layer to ensure a water and gas-tight seal. Allow adequate curing time as per manufacturer guidelines. Caution: Wear protective gloves and safety goggles during application. For optimal performance, check for complementary accessories such as applicator tips or finishing tools which can be searched separately.
The CLEAR Heat Resistant Sealant by Envirograf can endure temperatures up to 1300°C.
This product is available in both Black and Clear.
Yes, it is compatible with both water-based and solvent-based paints.
Yes, thanks to its neutral curing system, the sealant is practically odourless.
No, the CLEAR Heat Resistant Sealant is non-corrosive to metals.
No, this sealant will adhere to most substrates without the need for priming.
The sealant is suitable for alkaline substrates such as concrete, mortar and fibre cement.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Thursday, April 3rd.
If you need faster stove or fireplace delivery please give us a call.
We can often reduce longer lead times if we pay the carrier £25 for express delivery.
Visit our Shipping Information page for more information.
Warranty & Returns +
All our products come with warranties. Mi-Flex offers a lifetime guarantee.
Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.
Price Match Guarantee +
We will match any price like for like. If you find it cheaper within 48 hours, we'll refund the difference.
Compatible and other products that may be of interest...
When undertaking projects involving high temperatures, it is crucial to select materials that guarantee safety and longevity. The Envirograf CLEAR Heat Resistant Sealant is engineered to endure temperatures as high as 1300°C, making it an optimal choice for sealing, glazing, bonding, and repairing a wide range of applications, including fireplaces, solid fuel ovens, and firebrick installations.
Why Choose Envirograf CLEAR Sealant?
Exceptional Heat Resistance: One of the standout features of this sealant is its ability to resist extreme heat. With a maximum operating temperature of 1300°C, it ensures that your installations remain secure and intact in environments that experience daily high temperatures.
Versatile Application: Whether you are repairing a fireplace or refurbishing industrial equipment, this sealant is perfect for various substrates such as concrete, mortar, fibre cement, and firebricks. Its exceptional bonding properties mean you can rely on it for a long-lasting seal without the hassle of applying additional primers.
Dual Colour Options: Available in both Black and Clear, this product offers flexibility, enabling you to choose the perfect match to complement your design or conceal the sealant line seamlessly within your installation.
Odourless Formulation: Designed with a neutral curing system, the sealant is practically odourless. This feature is particularly advantageous for indoor applications, ensuring that you work in a safe, pleasant environment without the nuisance of strong smells.
How to Use the Sealant Effectively
Before application, it is important to prepare the substrate properly. Make sure the surface is clean, dry, and free from dust or any loose particles. The sealant adheres best when applied to a well-prepared surface, ensuring a uniform, water and gas-tight finish.
Using the supplied 310ml tube, the product is ready-to-use with minimal preparation. Whether you are a DIY enthusiast or a professional installer, you will appreciate how the product bonds directly without the need for a priming layer. Additionally, if you are looking for enhanced precision or a smoother finish, consider exploring optional accessories such as specialized applicator tips and finishing tools. A quick search on our website can help you find the tools that will elevate your installation process.
Addressing Common Concerns
Will the sealant withstand repeated heating and cooling cycles?
Absolutely. The formulation is designed to perform consistently in environments that experience both high temperatures and thermal fluctuations.
Is the product safe to use indoors?
Yes, thanks to its odourless curing system and non-corrosive nature, it is ideally suited for indoor applications such as kitchens, utility rooms, and industrial facilities without affecting air quality.
Do I need to apply a primer for better adhesion?
No. One of the major benefits of Envirograf’s CLEAR Heat Resistant Sealant is its ability to bond effectively without the need for any additional priming, making your installation process both faster and more efficient.
Final Thoughts
In a market where reliability can be the defining factor between a successful installation and an expensive failure, choosing a high-quality product is essential. Envirograf has established a reputation for excellence and innovation within the industry, and this sealant is another testament to their commitment to quality. The product not only meets but exceeds industry standards, making it an excellent investment for both residential and commercial applications.
While the superior performance of the sealant speaks for itself, we encourage customers looking to optimise their installations to explore the optional accessories available on our website. These accessories, including applicator tools and finishing items, can further enhance the ease and precision of your application, ensuring that you achieve a professional finish every time.
When considering the long-term benefits of your sealing solution, the Envirograf CLEAR Heat Resistant Sealant offers peace of mind, safety, and a durable finish that resists the stresses of high heat conditions. With its robust design and user-friendly application, it has quickly become a preferred choice among industry professionals and DIY enthusiasts alike.
For those who value quality, performance, and ease of use, this sealant is the clear choice. Its advanced formulation provides both immediate and enduring benefits, ensuring that every project is completed to the highest standard. Whether you are renovating an old structure or embarking on a new build, this product delivers unmatched reliability.
Invest in enduring quality and make the smart choice for your next project. Buy now or call 01670 206 999.
National Flues Ltd Verdict
The CLEAR Heat Resistant Sealant by Envirograf receives our top marks. Rarely beaten on price and delivering high performance, this sealant is perfect for a variety of high-temperature applications. We deliver nationwide and cater to both retail and trade customers, ensuring reliable delivery and exceptional service.
The CLEAR Heat Resistant Sealant is designed for glazing, sealing, bonding, and repairing tasks in high-temperature environments. Ideal for use with fire-bricks, fireplaces, solid fuel ovens, and more.
Envirograf is renowned for their high-performance fire prevention products, offering innovative solutions that ensure safety and reliability in various environments. Their sealants are particularly notable for their quality and durability.
Don’t settle for less – secure the best in high-performance heat resistant sealing today.
