The Department of Defense, through the Department of the Navy's NAVSUP Weapon Systems Support, is soliciting proposals for the procurement of filter elements, specifically identified by NSNs 0QM 4310 016995850 and 0QM 2915 016997341, with quantities of 22 and 23 each, respectively. These filter elements are critical components used in various military applications, necessitating government source approval prior to award, which requires interested vendors to submit detailed information as outlined in the NAVSUP WSS Source Approval Brochure. Proposals must be submitted via email to the primary contact, Connor Lewis, at connor.c.lewis.civ@us.navy.mil, by the specified deadline, and offers lacking the required source approval documentation will not be considered.