Below is a list of Medical Tubing manufacturers from Ontario, California. Medical tubing products, in the context of plastic tubing, are hollow, often clear plastic channels used exclusively in applications related to health care. Many sectors of the healthcare industry – hospitals, clinics, outpatient services and many others – have to make use of plastic tubing. It is used to deliver intravenous medication, it is used in laboratories, it is used in catheter systems and in many other applications.