The OCH (open coil heater) series of elements consists of helical wound nickel chromium resistance wires supported by interlocking ceramic insulators. The ceramic insulators are mounted on a flexible stainless steel strap which allows the element to be bent to an 18” radius. These flexible elements are available in two sizes and are designed to be inserted into standard 2” or 3” sch. 40 or sch. 80 closed pipe wells. Heating elements can be designed for a maximum heat flux of 12 watts per square inch or up to 1500 watts per linear foot for a 3” pipe well. The OCH elements are available as complete immersion heater assemblies which include pipe well, OCH element, terminal housing, and thermostat.