The filter-separator elements specified in this specification are intended for use in shipboard filter-separator housings to remove solids and water from fuel systems. These filter-separator elements are used in JP-5 and naval distillate fuel systems for aircraft, propulsion and auxiliary power gas turbines, diesel engines, and other miscellaneous internal combustion engines. New ships being designed will utilize stainless steel filter-separator housings and fuel systems. Current ships utilize copper-nickel filter-separator housings and fuel systems. Therefore, the filter-separator elements procured to this specification must be compatible with system materials and requirements.