Is SILICAFLEX SLEEVE silica fiber thermal sleeve resistant to chemical attack and which acids or bases should be avoided?

Yes. SILICAFLEX SLEEVE silica fiber thermal sleeve is chemically resistant to most substances, but it is NOT resistant to hydrofluoric acid (HF), phosphoric acid (H3PO4), and strong bases (concentrated alkalis). Avoid contact with HF, concentrated phosphoric acid, and strong alkaline solutions; these can severely attack silica fiber. For all other common acids, solvents and chemicals the sleeve shows good resistance, while retaining its high-temperature, flameâresistant and electroinsulating properties.

Can SILICAFLEX SLEEVE silica fiber thermal sleeve be used in high-temperature electrical insulation applications?

Yes. SILICAFLEX SLEEVE silica fiber thermal sleeve is suitable for high-temperature electrical insulation applications. With over 96% pure silica, it offers excellent temperature resistance (continuous up to +982Â°C, short-term up to +1650Â°C), flexibility, minimal shrinkage, and inherent electroinsulating properties. It is completely flame resistant, chemically resistant to most substances (except hydrofluoric acid, phosphoric acid, and strong bases), and does not emit smoke or fumes. Wall thickness (~1.65 mm) provides a durable insulating barrier. Ensure compatibility with specific voltage, mechanical stresses, and any exposed chemicals for your application.

Does SILICAFLEX SLEEVE silica fiber thermal sleeve resist mechanical abrasion and repeated flexing?

Yes. SILICAFLEX SLEEVE silica fiber thermal sleeve resists mechanical abrasion and repeated flexing to a significant degree. Its construction from over 96% pure silica fiber (silicon dioxide) yields excellent flexibility and low shrinkage at high temperatures, which helps the sleeve sustain repeated bending without rapid degradation. The material is mechanically robust for protection duties, and its wall thickness (~1.65 mm) provides a durable barrier against rubbing and wear in typical thermal-protection applications. However, while good for abrasion resistance and cyclic flexing compared with many ceramic or brittle insulators, silica fiber sleeves are not as abrasion- and cut-resistant as metallic or specialized polymeric protective coverings. Extreme, continuous mechanical abrasion, sharp-edge contact, or very aggressive flex cycles under load will eventually wear the sleeve. Also avoid exposure to hydrofluoric acid, phosphoric acid, and strong bases, which chemically attack the material. In summary: SILICAFLEX SLEEVE offers strong resistance to mechanical abrasion and repeated flexing for standard thermal-protection uses, but it can be outperformed by harder materials in very aggressive mechanical environments.

SILICAFLEX SLEEVE silica fiber thermal sleeve

All products, Covers/

Additional information

Maximum operating temperature [°C]	982
Standard length [m]	10, 15, 45

Thermal protection in the form of a sleeve. Strong, chemically resistant (except for hydrofluoric acid, phosphoric acid, and strong bases). Completely flame resistant. High content of pure silica (over 96%) ensures excellent temperature resistance, flexibility, and minimal shrinkage. It has electroinsulating properties. Does not emit smoke or fumes. Wall thickness is approximately 1.65 mm. Material: silica fiber (silicon dioxide). Operating temperature: up to +982°C (temporarily up to +1650°C).

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
FQ-SFHD-04	SILICAFLEX SLEEVE 6 mm cover	-	-	In stock	Enquiry
FQ-SFHD-08	SILICAFLEX SLEEVE 13 mm Cover	-	-	In stock	Enquiry
FQ-SFHD-16	SILICAFLEX SLEEVE 25 mm Cover	-	-	In stock	Enquiry
FQ-SFHD-24	SILICAFLEX SLEEVE 38 mm Cover	-	-	In stock	Enquiry
FQ-SFHD-32	SILICAFLEX SLEEVE cover 51 mm	-	-	In stock	Enquiry
FQ-SFHD-48	SILICAFLEX SLEEVE 76 mm Cover	-	-	In stock	Enquiry
FQ-SFHD-64	SILICAFLEX SLEEVE cover 102 mm	-	-	In stock	Enquiry
FQ-SFHD-96	SILICAFLEX SLEEVE cover 152 mm	-	-	In stock	Enquiry

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Thermal protection in the form of a sleeve. Strong, chemically resistant (except for hydrofluoric acid, phosphoric acid, and strong bases). Completely flame resistant. High content of pure silica (over 96%) ensures excellent temperature resistance, flexibility, and minimal shrinkage. It has electroinsulating properties. Does not emit smoke or fumes. Wall thickness is approximately 1.65 mm. Material: silica fiber (silicon dioxide). Operating temperature: up to +982°C (temporarily up to +1650°C).