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Power Tools Direct£9.23Visit shop Soudal Black Silirub® Ht-A 300Ml 108265
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Soudal Silirub HT-A is a professional-grade, elastic single-component silicone sealant engineered for technicians, mechanics, and heating engineers who require reliable seals in extreme heat environments. Its primary benefit is its ability to maintain permanent elasticity while resisting temperatures up to 285°C, making it superior to standard silicones for engine and heating maintenance; however, users should be aware that it utilizes an acetoxy curing system, which may not be suitable for sensitive alkaline substrates.
| Colour | Black |
|---|---|
| Model Part Number | PTDSOU108265 |
| Brand | Soudal |
Soudal Silirub HT-A is designed to withstand temperatures up to 285°C.
No, it is an acetoxy silicone and is not recommended for alkaline substrates like concrete, as it may cause damage or poor adhesion.
Cure time depends on temperature and humidity, but it typically forms a skin within 5-10 minutes and continues to cure through the bead over 24-48 hours.
No, this product is not designed to be painted over.
No, always use dedicated aquarium-safe sealants that do not contain fungicides or acetic acid that could harm marine life.
Store in its original, unopened packaging in a cool, dry place to ensure it reaches its 12-month shelf life.
Ensure the application area is not too cold or humid; acetoxy silicone requires atmospheric moisture and moderate temperatures to cure properly.
Check that the surface was thoroughly cleaned of all oil, grease, and dust before application, as surface contaminants prevent proper adhesion.
To ensure maximum performance, surfaces must be clean, dry, and free of dust or grease. Use a standard caulking gun to apply the sealant in an even bead. Because this is an acetoxy-based product, avoid using it on copper or lead, as it may cause corrosion.
For storage, keep the cartridge in a cool, dry place to maintain the 12-month shelf life. Always ensure the cap is replaced tightly after use to prevent the remaining material in the cartridge from curing prematurely. If you need to smooth the sealant, do so within 5-10 minutes of application using a soapy water solution before the skin forms.
