Plastic tubing is constructed of many different plastic compounds for flow lines for fluids and gases in pneumatic, hydraulic, process, medical and many other specialized applications.  Tubing can be flexible or rigid, depending on the material and its purpose. Tubing listed here is generally smaller and less rigid than materials classified as hose or pipe.  Application, dimensions, performance specifications, material, features, and color are all important parameters to consider when specifying plastic tubing.