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OnBuy.com£13.10Visit shop High Temperature Stove Flue Sealant 1500C Black Silicate Fire Cement Alternative 310Ml Cartridge 5056826615725
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B&Q£18.08Visit shop B&Q - High Temperature Silicone Sealant 1500 C BlackHeavy Duty Heat Resistant Fire Cement & Flue SealerFor Wood Burner Stoves
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The Diyuk High Temperature Silicone Sealant is an essential maintenance solution for homeowners with wood burners, pizza ovens, or multi-fuel stoves who need a reliable, professional-grade material to seal static joints and repair fire-exposed surfaces. Rated to withstand extreme heat up to 1500°C, this silicate-based compound offers superior adhesion and a durable, heat-hardened finish that ensures your heating system operates safely and efficiently. While it provides an exceptional bond for static components, users should note that it is not intended for joints subject to constant movement or vibration, as it cures to a rigid, hardened state.
| Colour | Black |
|---|---|
| Brand | Diyuk |
No, this is a rigid silicate-based sealant intended for static joints, not for securing stove glass which requires a flexible heat-resistant gasket adhesive.
It is designed for high-heat environments. While it is stable, it is not intended as a weather-proofing sealant for outdoor use.
Yes, provided the surface is cleaned of any oils or coatings and is rust-free before application.
Initial setting occurs relatively quickly, but it must be cured by gradually increasing the heat to 250°C to reach full hardness.
The sealant cures to a natural matte dark grey/charcoal finish that is intended to blend with stoves, so painting is generally unnecessary.
Heating too quickly before the material has properly set can cause internal moisture to bubble, potentially leading to cracks in the seal.
Ensure the substrate was completely clean and free of loose rust. Also, avoid applying too thick a bead in a single pass.
The product requires a gradual heating cycle up to 250°C to finalize the hardening process. Ensure you have properly 'fired' the unit.
Verify that all dust and debris were removed. On very dry or porous surfaces, ensure a light water mist was applied before the sealant.
