What temperature range can this silicone sealant withstand?

Once cured, Soudal Silirub HT°-N withstands temperatures from -50 °C to 280 °C.

What applications is this high-temperature silicone suitable for?

Use it for sealing heating installations, pumps, engines, and joints exposed to high temperatures.

Does this neutral cure silicone corrode metals?

No, the neutral cure formulation does not corrode or attack metals and other common substrates.

How do you apply this silicone sealant?

Apply the cartridge using a standard caulking gun onto clean, dry, and grease-free surfaces between 5 °C and 35 °C.

Does the silicone remain flexible after curing?

Yes, it cures into a permanently elastic seal that retains flexibility under severe thermal stress.

SOUDAL Silirub HT° - N silicone black (310 ml) - 108266

Name: SOUDAL Silirub HT° - N silicone black (310 ml) - 108266
Brand: SOUDAL
SKU: 11993284
Price: 12.09 EUR
Availability: InStock

Supplier number: SOUDAL 108266 | EAN 5411183036031

From 1 piece €12.09

From 15 pieces €11.48 - €9.07 saving

From 30 pieces €11.18 - €27.20 saving

From 45 pieces €10.88 - €54.40 saving

12.09 tax incl.

€9.99 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered as of 05/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

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Reliable high temperature sealing for heavy-duty joints

Practical benefits

Heat resistant to 280 °C: You can securely seal heating installations, pumps, and engine components exposed to high temperatures using this Soudal sealant.
Permanently elastic after cure: You maintain a durable, flexible seal that easily accommodates mechanical vibrations and thermal expansion.
Neutral and versatile adhesion: The neutral-curing silicone bonds firmly to most metals and construction materials without causing substrate corrosion.

In a nutshell

The right choise for

With the Soudal Silirub HT°-N high-temperature silicone sealant, you easily create a reliable, flexible seal where extreme heat is present. Once cured, this black neutral-cure sealant withstands temperatures from -50 °C to 280 °C, accommodating thermal expansion and vibration without cracking. Its neutral formulation adheres firmly to metals and building materials without causing corrosion. Whether you are sealing heating installations, stoves, flue pipes, pumps, or engine components, you can apply this 310 ml cartridge with a standard caulking gun for a durable, heat-resistant seal.

Product information FAQ

€12.09

In stock - tax incl.

Key features according to our expert

Net volume: 300 ml
EUH-statements: EUH210
ADR packing group: Not applicable
ADR class: Not applicable
Colour (manufacturer): Black
UN number: Not applicable
Physical state: Liquid
Fire resistant: Yes
Packaging: Cartridge

Product description:

Silirub HT°-N is a neutral cure, elastic, single component engineering sealant based on silicone which withstands very high temperatures.

Characteristics:

Permanently elastic after full cure
Neutral cure, high modulus
High bond strength
Withstands temperatures of up to 280°C

Applications:

Sealing of heating installations
Gaskets in pumps and motors
Sealing between metals and plastics which are exposed to high temperatures
All sealants applications which require high temperature resistance

Directions for use:

Method: caulking gun
Application temperature: +5°C to +35°C
Clean: with white spirit before curing
Repair: with Silirub HT°-N
Finish: with soapy solution before skin forming

Remarks:

Chemically completely neutral

Supplemental hazard information

EUH210: Safety data sheet available on request.

All Features

Net volume: 300 ml
Euh-statements: EUH210
Adr packing group: Not applicable
Adr class: Not applicable
Colour (manufacturer): Black
Un number: Not applicable
Physical state: Liquid
Fire resistant: Yes
Packaging: Cartridge
Colour: black
Packaging form: Tube
Product content: 310 ml

Brand SOUDAL
11993284
EAN 5411183036031
Supplier number SOUDAL 108266

Frequently asked questions about this product

Answered by specialists

What temperature range can this silicone sealant withstand?: Once cured, Soudal Silirub HT°-N withstands temperatures from -50 °C to 280 °C.
What applications is this high-temperature silicone suitable for?: Use it for sealing heating installations, pumps, engines, and joints exposed to high temperatures.
Does this neutral cure silicone corrode metals?: No, the neutral cure formulation does not corrode or attack metals and other common substrates.
How do you apply this silicone sealant?: Apply the cartridge using a standard caulking gun onto clean, dry, and grease-free surfaces between 5 °C and 35 °C.
Does the silicone remain flexible after curing?: Yes, it cures into a permanently elastic seal that retains flexibility under severe thermal stress.