The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting proposals for the procurement of filter elements under the solicitation titled "28--FILTER ELEMENT." This procurement is focused on acquiring essential components for aircraft engines, categorized under the NAICS code 336412, which pertains to Aircraft Engine and Engine Parts Manufacturing. The items are critical for maintaining operational readiness and performance of naval aircraft, emphasizing the importance of quality and compliance with government standards. Interested vendors must ensure they are an approved source prior to award, as detailed in the NAVSUP WSS Source Approval Brochure, and should submit their proposals along with the required documentation to Charles Horan at 215-697-1303 or via email at charles.f.horan4.civ@us.navy.mil. The solicitation includes various compliance requirements and emphasizes the need for timely processing to meet fleet support needs.