The Flexaust Flexadux T-7W thermoplastic rubber duct hose, used for duct cleaning, dust removal, and bulk material handling applications, is a medium weight black thermoplastic rubber hose, reinforced with a spring steel wire helix. It resists chemicals, moisture, ultraviolet (UV) light, external abrasion, and drag, and is flexible and compressible for easy manipulation. A temperature range of -60 to 275 degrees F makes it suitable for applications such as furnace duct cleaning and chip removal. This thermoplastic rubber duct hose has a wall thickness of 0.025 inch (for a diameter of 2 inches) or 0.030 inch (for diameters of 2.5 inches and larger), and a smooth interior that provides minimal friction and efficient air flow.

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.