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Heat-resistant silicone
Silicone sealant with acetate crosslinking, specifically for high temperatures
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Variants
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Extremely high heat resistance of up to 300 °C
Sealant with a high elastic modulus and long-term elasticity
- Outstanding resistance to ageing
- Ideal for external and internal use
- Weather- and UV-resistant
Limitations for use
- Not suitable for use on natural stone and surfaces such as marble, granite, quartzite, concrete, fibre cement and mortar
- Acetic acid produced by silicone during crosslinking may lead to corrosion of untreated metallic surfaces
- For applications on aluminium (untreated, anodised and powder-coated), chrome plated or porous surfaces, use the appropriate Würth silicone primer art. 0890170
- Not suitable for sealing cylinder heads or components that are in continuous contact with fuels
Warnings
Cannot be painted over. The time required for complete curing may be longer at lower temperatures, at lower humidity, with increased joint thicknesses or with reduced air flow. During curing, the sealant releases a small amount of acetic acid, which may irritate the eyes and mucous membranes. Ventilate the working environment well. In case of accidental contact with the eyes or mucous membranes, rinse with plenty of water and seek medical advice
Joint size
The width and depth of the joint are extremely important and must be planned based on the dimensions of the object to be sealed, so that the sealant can follow the movements of the adjacent materials without breaking or separating (maximum elongation). These movements are caused by thermal expansion and various types of settling of the different materials that make up the objects
Product complies with UNI EN ISO 11600
Important information:
The product is not suitable for structural bonding, e.g. of continuous structural façades (structural glazing). Does not adhere to plastics such as PTFE, PE and PP or to damp surfaces. Not suitable for sealing and constructing aquariums or for underwater sealing. Not suitable for bonding mirrors. Due to the variety of existing materials and finishes, it is always necessary to carry out preliminary tests for your specific product application to avoid unwanted reactions. Given the wide variety of materials used, it is always necessary to carry out preliminary tests. Does not adhere to plastics such as PTFE, PE and PP
While the technical advice given is based on our experience and should be followed, it is purely indicative and must be confirmed through extensive practical tests. This does not relieve the purchaser of their responsibility to personally test our products to see whether they are suitable for the intended use
- Sealing of expansion joints and fittings in the vicinity of or in direct contact with surfaces that reach particularly high temperatures
- Outstanding adhesion to metal and glass
- Suitable for industrial use
- For sealing joints subject to continuous thermal load in the field of mechanical engineering and heating systems (e.g. boilers, heat exchangers,
- fittings on pipes and heating pipes, flanges, cylinder heads, combustion engine pipes, ovens, hobs, extractor hoods, fireplaces etc.)
All joint surfaces must be perfectly clean, dry and free from oil or grease. The edges of porous joints must be pre-treated with the appropriate Würth silicone primer art. 0890170. Make sure that the size of the joint is correct. Avoid adhesion of the product on three sides. Deep joints should be suitably filled with Würth backfill material art. 0875 8... Extrude the sealant in suitable quantities without introducing air while filling the joint. Smooth the seal within 5 minutes of application of the product, using the special Würth smoothing agent art.0893003 and the appropriate Würth joint smoother art. 0891184...
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