High Temp Silicone Sealant 1500C Stove Fireplace Flue Chimney Repair Dark Grey | DIYUK LTD
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High Temp Silicone Sealant 1500C Stove Fireplace Flue Chimney Repair Dark Grey

💡 Tip:

Apply only to static, non-moving joints and allow a slow post-cure heat-up to +250C in service.

High temperature 1500C stove and flue sealant, 310ml cartridge, silicate-based, vitrifies under heat.

✅ Suitable for: Stove, Flue and Fireplace Joint Sealing
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Rated to 1500°C (2732°F)

Maximum service temperature - engineered for solid-fuel stove and flue joints where ordinary silicone sealants fail.

Silicate-Based Formula

Vitrifies under heat into a rigid, ceramic-like mass rather than degrading like a standard heat-resistant silicone.

Permanent, Smoke-Tight Seal

Resists carbon monoxide and flue-gas leakage at static, non-moving joints.

Thixotropic (Non-Slump) Paste

Holds its shape when tooled into vertical or overhead joints.

310ml Cartridge

Compatible with any standard sealant/caulking gun. Net weight 724g.

Colour Change on Cure

Black to dark grey, becomes extra-hard once heat-cured up to +250°C in service.

Wide Material Bonding

Cast iron, mild steel, stainless steel, firebrick, concrete, stone and clay.

Technical Specification

Maximum Service Temperature1500°C (2732°F)
Cartridge Size310ml (10.5fl oz)
Net Weight724g (1.6lb)
Colour As SuppliedBlack
Colour After Heat-TreatmentDark Grey, Extra-Hard
Cure TypeRigid, Vitrifying
Recommended Post-Cure Heat-UpSlowly to +250°C
Joint TypeStatic (Non-Moving) Only
Application Temperature+5°C to +35°C Ambient
High Temp Silicone Sealant 1500C Stove Fireplace Flue Chimney Repair Dark Grey in practical use

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