TAJ ENTERPRISES Duct hoses have many characteristics, including flame retardance, cold resistance, and oil resistance. The type of duct hose you need depends on what you're using it for. Here are some types of duct hoses: Silicone hose: Made of fiberglass fabric coated with silicone rubber, this hose is used for exhaust, engine warming, and construction. Vacuum hose: Used for air cleaning, transporting granules, and in washing machines. PVC duct hose: Made of clear PVC with a spring steel wire helix, this hose is used for fume control and industrial air movement. It's flexible, resistant to chemicals and moisture, and has tight bending properties. Flexible ducting: Used to funnel, dust fumes, and abrasive materials from one location to another. This type of ductwork pipe is flexible, easy to install, and relatively low cost. Aluminium hose: Durable, lightweight, and corrosion-resistant, this is the most common material for air ducts. Polyurethane hose: This hose is resistant to chemicals and weathering qualities. PU duct hose: Made of abrasion resistant polyurethane with a copper plated spring steel spiral, this hose is very light, flexible, and has good tensile and abrasion strengths.