👀 6 people are viewing this product
× National Flues
Free Delivery on Orders £100+
100% 5* reviewed on Trustpilot
Free stove flue design service
Delivery to mainland UK
Call for help on 01670 206999

CLEAR Heat Resistent Sealent - Envirograf - 1300°C (93-HTS-ENV-C)

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 access Read more...
The price you pay today £16.99
Give us a call if you find it cheaper and we'll normally price match.

 

Payment Options

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
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, June 30th. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please give us a call. We can sometimes 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 and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. 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, on a retail basis. Give us a call if you find it cheaper and want to buy from us.

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.

Have Questions?
Phone: 01670 206999
Email: [email protected]

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 Temperature1300u00b0C
Colour OptionsBlack, Clear
Tube Size310ml
Suitable SubstratesConcrete, Mortar, Fibre Cement, Fire-bricks
Curing SystemNeutral (odourless)
Paint CompatibilityWater-based and Solvent-based paints
ApplicationGlazing, 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.

Your recently viewed products:

Multiple Payment Options- including Klarna, Clearpay, Mastercard, Visa and Paypal