The Flexaust Flex-Tube PU polyurethane duct hose, used for dust control and light bulk material handling applications, is a clear, thermoplastic polyurethane hose, reinforced with a rigid external yellow ABS helix; it resists external abrasion, tearing, punctures, degradation by hydrolysis and microbes, and is flexible for easy manipulation. A temperature range of -40 to 200 degrees F makes it suitable for applications such as lawn and leaf collection. This duct hose is crush resistant, clear for viewing inside, and has a smooth interior to assure efficient air flow and the elimination of material build-up.

Duct hoses are flexible or rigid tubes that convey gases, liquids, and lightweight bulk materials from one location to another. They are made from an array of materials that range from polyurethane and thermoplastic rubber, to PVC and aluminum-coated fiberglass fabric, and are typically reinforced with a steel wire or rigid plastic helix, also known as a “spiral.” Duct hoses are secured with hose clamps or U-bolts, and two pieces of hose are joined with a hose connector. Common applications for duct hoses include heating and cooling, ventilation, fume and smoke exhaust, vacuum cleaning, moving chips and shavings, handling bulk packing materials, and water and waste discharge.

Flexaust manufactures flexible hose, metal ducting, and accessories for industrial and commercial applications. The company, founded in 1938 and headquartered in San Diego, CA, is part of the international Schauenburg Group.