NSN 5330-01-513-8620; Unrestricted ; Seal, Nonmetallic SP, F-18  Aircraft; Critical Application Item; Configuration Control Applies; Definite Quantity Contract for 99 pieces; Origin Inspection; FOB Origin to Stock Location;  411 Requested Delivery; Export Control applies. Approved source The Boeing Company 76301 Part Number 74A463726-1007, Electronic Offers are not acceptable; Offerors must submit a completed solicitation package;  The proposed contract action is for supplies or services for which the Government intends to solicit and negotiate with only one source under the authority of FAR 6.302. Interested persons may identify their interest and capability to respond to the requirement or submit proposals. This notice of intent is not a request for competitive proposals. However, all proposals received within forty-five days (thirty days if award is issued under an existing basic ordering agreement) after date of publication of this synopsis will be considered by the Government. A determination by the Government not to compete with this proposed contract based upon responses to this notice is solely within the discretion of the Government. Information received will normally be considered solely for the purpose of determining whether to conduct a competitive procurement. Based upon market research, the Government is not using the policies contained in Part 12, Acquisition of Commercial Items, in its solicitation for the described supplies or services. However, interested persons may identify to the contracting officer their interest and capability to satisfy the Government's requirement with a commercial item within 15 days of this notice. The solicitation issue date is April 8, 2016.