17 Non-metal flexible and semi-flexible tubes, hoses, and pipe for conveying fuel, hydraulics, lubrication, gases, oxygen, and air in turbines, aircraft, and military and space applications, namely, steel braided and para-aramid flexible tubes, that include a smooth bore Polytetrafluoroethylene (PTFE) inner core, as well steel braided and para-aramid flexible tubes, that include rubber coatings or sleeves and a convoluted Polytetrafluoroethylene (PTFE) inner core for conveying fuel, hydraulics, lubrication, gases, oxygen, and air in turbines, aircraft, and military and space applications; non-metal flexible and semi-flexible hoses for conveying fuel, hydraulics, lubrication, gases, oxygen, and air in turbines, aircraft, and military and space applications, namely, steel braided and para-aramid flexible hoses that include a smooth bore Polytetrafluoroethylene (PTFE) inner core, as well steel braided and para-aramid flexible hoses, that include rubber coatings or sleeves and a convoluted Polytetrafluoroethylene (PTFE) inner core for conveying fuel, hydraulics, lubrication, gases, oxygen, and air in turbines, aircraft, and military and space applications; non-metal flexible and semi-flexible pipes for conveying fuel, hydraulics, lubrication, gases, oxygen, and air in turbines, aircraft, and military and space applications, namely, steel braided and para-aramid flexible pipes, that include a smooth bore Polytetrafluoroethylene (PTFE) inner core, as well steel braided and para-aramid flexible pipes, that include rubber coatings or sleeves, and a convoluted Polytetrafluoroethylene (PTFE) inner core for conveying fuel, hydraulics, lubrication, gases, oxygen, and air in turbines, aircraft, and military and space applications