https://www.hitechcontrols.com/cables/heat_resistant_cables/silicone/sihf.html

Heat-Resistant Cable: SiHF (Silicone Multi Conductor Cable, Flexible, Halogen-Free)
• Flexible connection cable
• Halogen-free, heat-resistant
• Temperature Range: -76°F to 356°F (-60°C to 180°C)
• Applications: power stations, steel producing industry, aviation, ship building industry,
ceramic / glass and cement factories
• Shielded version also available