These silicone duct hoses feature a highly flexible design, constructed from double-ply silicone-coated fiberglass fabric and reinforced with a spring steel wire helix and an external fiberglass cord. This structure provides outstanding chemical and thermal resistance, making them suitable for a wide range of ducting applications. Their ability to endure high temperatures also positions them as an excellent choice for demanding uses, such as silicone exhaust ducts. RAINBOW is a leading supplier of silicone duct hoses in China. Welcome to RAINBOW to buy silicone duct hose.