1.4 N6275850557600 BN rd.pdf

This document is a NAVSUP Fleet Logistics Centers Sole Source Justification form for a specific naval equipment part. The document details a brand name requirement for a Replace #4 Stern Tube Seal for Navy vessels, with Wartsila Defense, Inc. as the sole manufacturer. The part (DOC#: N62758-5055-7600, P/N: US-70589-1 ITEM 24) is identified as proprietary, with Wartsila Defense holding exclusive intellectual property rights, and no other manufacturers able to provide the material.

Key details include the item's NSN (2010-01-283-1507), confirmation that it is already ordered to supply the system, and justification that Wartsila Defense is the only source due to unique form, fit, and function requirements. The document indicates this is a direct replacement part for existing Navy vessel equipment, with the contracting office confirming Wartsila as an authorized distributor. The procurement is anticipated to be a commercial, firm fixed-price supply contract, with the related solicitation (N0040625QS363) expected to be posted on SAM.gov in July 2025.