× National Flues
We Will NOT Be Beaten on Price.
Free Delivery on Orders Over £100
5 Star Reviewed on Trustpilot
Free Flue Design Service Available
Help? 01670 206999 (8am-5pm)

Heat Resistant Sealant 1300°C, 310ml

Discover National Flues' Heat Resistant Sealant 1300°C, 310ml – the ultimate high-temperature repair solution for firebricks, fireplaces, and ovens. Engineered for superior performance, this superior sealant offers exceptional durability, ensuring reliable repairs in even the most demanding thermal ... More...
Hover to Zoom / Click for Gallery

At a Glance

  • Withstands temperatures up to 1300°C
  • Ready-mixed 310ml cartridge for easy application
  • Remains flexible until curing for versatile repairs
  • Ideal for firebricks, fireplaces, boilers, ranges, and solid fuel ovens
  • Durable, high-temperature performance ensuring long-lasting repairs
Now only £12.99
Including VAT Buy with confidence. If you find this cheaper within 48 hours of checkout, we'll refund the difference.

 

Payment Options

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]

Our Heat Resistant Sealant 1300°C, 310ml is the ultimate solution for high-temperature repairs and installations. This ready-mixed, finely-ground putty remains flexible until cured, making it perfect for an array of applications including patching and repairing firebricks, fireplaces, boilers, ranges, and solid fuel ovens. Whether you are dealing with minor wear and tear or more significant damage, this sealant provides an efficient and durable fix.

It's user-friendly, ensuring a straightforward application process, and its high heat resistance ensures long-lasting results amidst the most challenging conditions.

SKU: 93-HTS

Technical Specifications
Maximum Temperature1300u00b0C
Volume310ml
Curing TypeFlexible until cured
Application AreasFirebricks, fireplaces, boilers, ranges, solid fuel ovens, register plates
PackagingReady-mixed cartridge
BrandNational Flues
Before applying the Heat Resistant Sealant, ensure the surface is clean, dry, and free from dust or loose debris. Wear appropriate protective gloves and eye protection. Use a spatula or putty knife to press the sealant firmly into the gap or crack. For optimum performance, apply the sealant in layers if necessary, allowing each layer a brief period to settle before applying the next. Avoid over-applying and ensure proper smoothing for an even finish. Be cautious of ambient temperature and ventilation during curing; the sealant begins to set as soon as exposed to heat. Finally, allow full curing time before subjecting the repaired area to high thermal loads.

The Heat Resistant Sealant can withstand temperatures up to 1300°C, making it perfect for high-temperature environments such as fireplaces and ovens.

The sealant remains flexible until cured, which means it hardens as it is exposed to heat during its application.

Yes, the sealant is ready-mixed and comes in a convenient 310ml cartridge, making it very straightforward to apply.

Yes, it's ideal for use around register plates as well as for patching and repairing a variety of high-temperature applications.

The curing time can vary depending on the application, but it typically begins to set as soon as it is exposed to heat.

The Heat Resistant Sealant is primarily designed for internal use where high temperatures are present, such as in fireplaces and ovens.

Yes, once fully cured, you can paint over the sealant to match its surroundings.
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.

Read our buyers guide for this Heat Resistant Sealant 1300°C, 310ml

National Flues Ltd Verdict

The Heat Resistant Sealant 1300°C, 310ml is a must-have for both DIY enthusiasts and professionals. We’re rarely beaten on price and offer reliable nationwide delivery to both retail and trade customers.

This sealant is used for patching and repairing high-temperature surfaces like firebricks, fireplaces, solid fuel ovens, ranges, boilers, and around register plates.

National Flues is a trusted supplier of high-quality fireplaces and flues to retail and trade customers nationwide. Known for competitive pricing and reliable delivery, they offer secure online payments for retail and trade accounts.

 

Our Rating Image

Invest in the ultimate solution for high-temperature repairs today and experience unmatched durability.

Your recently viewed products:

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