TEC cables manufactured by ESP Cable Solutions Co., Limited are used in the oil & gas industry. It uses welded tubing(316L, Allloy825 or others) to protector electrical and optical components from the pressure and corrosive effects of the downhole enviroments. Customers can choose bare or tro-pp encapsulated TEC, so that they can handle the extreme environment, extreme temperature and extreme pressure in the downhole. -- 18AWG 4mm Tubing Encapsulated Cable (TEC Cable) Product Name: 18AWG, 150 Degree Celsius 4mm Tubing Encapsulated Cable Conductor: 18AWG, Tinned Stranded Copper Conductor Insulation: FEP Insulation Jacket: FEP Jacket Tubing: 4mm X 0.76m 316L SS Capillary tubing  Encapsulated TEC Cable: 11mm X 11mm Square Shape Temperature Rating: 150 Degree Celsius  Recommend Packing: 5000m/spool or 20000FT/spool