►Soudal | High Heat Resistant Sealants

High Temperature Silicone That Seals Under Extreme Heat & Thermal Stress Heat doesn’t weaken sealants slowly, it breaks them fast. Once temperatures rise, standard sealants crack, burn out or lose adhesion, leaving gaps that can lead to leaks, system failure or serious safety risks. Soudal high heat resistant sealants are...

High Temperature Silicone That Seals Under Extreme Heat & Thermal Stress

Heat doesn’t weaken sealants slowly, it breaks them fast. Once temperatures rise, standard sealants crack, burn out or lose adhesion, leaving gaps that can lead to leaks, system failure or serious safety risks. Soudal high heat resistant sealants are built for those conditions. These are high temperature sealants designed to handle sustained heat without breaking down.

This range includes high temperature silicone sealants, fireproof sealants & heat proof sealing compounds used across exhaust systems, flues, ovens & industrial equipment. These products bond to metal, masonry, ceramics & heat-exposed surfaces while maintaining sealing performance under thermal expansion, vibration & continuous heat load.

To complete high temperature sealing work, trades pair these with Adhesives & Tapes, Roof Sealants & Adhesives & Concrete Repair & Restoration. For accurate application in confined or high-risk areas, use Caulking Guns, Hand Tools, Measuring & Layout Tools & Safety & Personal Protective Equipment so every joint holds under heat.

What’s in This Collection:

► High temperature silicone sealant
‣ Designed for continuous heat exposure across flues, exhausts & appliances

► Heat proof sealant (high temp rated)
‣ Maintains adhesion under extreme temperatures without breakdown

► Fireproof sealant
‣ Suitable for fire-rated sealing applications & heat-critical joints

► Exhaust system sealant
‣ Built for engine components, flues & high heat ducting

► Oven & appliance high temperature sealant
‣ Handles sustained heat in cooking equipment & industrial ovens

► Industrial high heat sealant
‣ Used across machinery, plant equipment & thermal systems

► High adhesion heat resistant silicone
‣ Bonds to metal, masonry & ceramics under heat stress

► Crack-resistant high temperature sealant
‣ Handles expansion & contraction without splitting or failure

On site, standard sealants fail quickly under heat. High temperature silicone sealants are what keep joints sealed when temperatures push past normal limits.

Trade Applications for Soudal High Heat Resistant Sealants

This is where heat resistant sealants prove their value, in environments where temperature breaks down standard materials.

► Flue & chimney sealing
 ‣ Maintains safe seals in high heat exhaust systems

► Exhaust & engine component sealing
 ‣ Handles thermal expansion, vibration & heat cycling

► Industrial machinery & plant equipment
 ‣ Seals joints exposed to sustained high temperatures

► Oven, kiln & appliance sealing
 ‣ Withstands continuous heat without degrading

► Fire-rated construction sealing
 ‣ Provides protection in heat-critical compliance areas

► Maintenance, repair & retrofit work
 ‣ Re-seals heat-damaged joints without full replacement

Across construction, mechanical trades & industrial environments, high temperature sealants prevent failure where heat exposure is constant.

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  • Soudal - Silirub HT-N Neutral Cure - (Up to 285°C) 310ml | 108266
    Soudal - Silirub HT-N Neutral Cure - (Up to 285°C) 310ml | 108266
    Seal with Heat Resistance You Can Trust The SOUDAL Silirub HT-A Acetic Cure is a professional-grade, high-temperature silicone sealant designed for long-term performance in extreme conditions. Withstanding temperatures up to 285°C, it's the ideal solution for sealing and bonding tasks in demanding environments. Key Features:...
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  • Soudal - Silirub HT-A Acetic Cure - (Up to 285°C) 310ml | 108265
    Soudal - Silirub HT-A Acetic Cure - (Up to 285°C) 310ml | 108265
    Seal with Heat Resistance You Can Trust The SOUDAL Silirub HT-A Acetic Cure is a professional-grade, high-temperature silicone sealant designed for long-term performance in extreme conditions. Withstanding temperatures up to 285°C, it's the ideal solution for sealing and bonding tasks in demanding environments. Key Features:...
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  • Soudal - Firecement HT - Black (Up to 1500°C) 310ml | 108264
    Soudal - Firecement HT - Black (Up to 1500°C) 310ml | 108264
    Ignite Precision with Confidence Soudal Firecement HT – Black (Up to 1500 °C) 310 ml | 108264 is the high-performance, hard-setting sealant designed for trade professionals who demand dependable heat-resistant solutions. OverviewSoudal Firecement HT is a one-component, ready-to-use, high-temperature sealant that cures to a durable, hard seal—engineered to endure extreme heat up...
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Sealing That Holds When Heat Pushes Materials Past Their Limits

Heat changes everything. Materials expand, surfaces shift, pressure builds & that’s when weak seals fail. Once a seal breaks under heat, the problem spreads fast, leaks, damage, safety risks. High temperature sealants aren’t just about performance, they’re about preventing failure before it starts.

Soudal high heat resistant sealants are built for that environment. They hold under sustained temperature, flex with expansion & stay bonded where standard products break down. That’s critical on exhaust systems, flues, industrial equipment & any application where heat is constant.

If surfaces are damaged or uneven, use Concrete Repair & Restoration first to create a stable base. For exposed roofing or external high heat areas, pair with Roof Sealants & Adhesives to protect against weather & long-term exposure.

Stock is ready with Same day dispatch & if you’re managing ongoing jobs or sourcing for multiple sites, access is supported through Alpha crew Member perks to keep supply consistent.

► High temperature sealants built for extreme heat & thermal stress
► Proven performance across exhaust, flue & industrial applications
► Bulk supply options for contractors, workshops & maintenance teams
► Fast Australia-wide delivery to keep jobs moving

Get the Right High Temp Sealant & Prevent Heat-Driven Failures

Heat doesn’t give second chances. Once a seal fails, the damage is already underway. The right high temperature sealant holds under pressure, resists breakdown & keeps systems safe.

Use high temperature silicone sealants where heat is constant, where expansion is expected & where failure isn’t an option. Get it right first time & avoid coming back to fix it.

Frequently Asked Questions

Heat resistant sealants handle continuous high temperatures, while fireproof sealants are designed for fire-rated applications & compliance conditions.

Yes. It is specifically designed for flues, exhausts & high heat ducting where temperatures exceed normal limits.

Yes. It remains flexible to handle expansion & contraction caused by temperature changes.

Quality high temp sealants are designed to resist breakdown under sustained heat exposure.

Yes. It bonds strongly to steel, aluminium & other heat-exposed materials.

Yes. It is commonly used on machinery, plant equipment & thermal systems exposed to high heat.

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