Several materials are used to produce extruded-plastic pneumatic tubing including:
Polyurethane tubing is strong and has excellent kink resistance compared to other types. With a working pressure of 150 psi or higher, its the most commonly used tubing material. It also has tight OD tolerance, and a wide range of available push-to-connect fittings. Note that a number of tubing colors and diameters are offered to help identify pneumatic circuits. UV stabilization is an option for outdoor use.
Polyurethane and PVC tubing are the most flexible materials available. Polyurethane tubing is very durable with outstanding memory, making it a good choice for coiled, portable, or selfstoring pneumatic hose applications. PVC is not as tough as polyurethane, but can be specified for foodgrade applications. It’s also a good choice when high flexibility and low cost are required.
Nylon and polyethylene tubing use harder plastics and, thus, are less flexible. This makes these material types a good choice for air distribution and straightrun piping applications. Notable nylontubing properties include high workingpressure capability (to 800 psi), a temperature range to 200 F, and excellent chemical resistance.
PTFE tubing has several notable properties of its own, including high heat resistance, excellent chemical resistance, and good dielectric properties. PTFE tubing can handle temperatures as high as 500 F, is chemically inert, and can be used in applications sensitive to static electricity.
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