# SAM #N0040626Q0531
Sole Source Installation of Port Stern Tube Shaft Seal Assembly for US Navy Ships
**Buyer:** NAVSUP FLC Puget Sound
**Posted:** September 17, 2026
**Respond By:** September 23, 2026
**Identifier:** N0040626Q0531
**NAICS:** 336611
NAVSUP Fleet Logistics Center Puget Sound, part of the Department of the Navy, is requesting installation services for a port stern tube shaft seal assembly inflatable seal.
- Government Buyer:
- Department of the Navy
- NAVSUP Fleet Logistics Center Puget Sound
- OEM and Vendor:
- Defense Maritime Solutions Inc. (sole source)
- Products/Services Requested:
- Installation of port stern tube shaft seal assembly inflatable seal
- No specific part numbers or quantities provided
- Unique Requirements:
- Strict adherence to prescribed materials, engineering drawings, and logistics documents
- Only authorized spares may be installed
- Sole source procurement due to technical constraints
- Applies to US Navy Ships and Military Sealift Command (MSC) vessels
### Description
Fleet Logistics Center Puget Sound (FLCPS) intends to solicit for the INSTALLATION OF THE PORT STERN TUBE SHAFT SEAL ASSEMBLY INFLATABLE SEAL.
This requirement is sole sourced to DEFENSE MARITIME SOLUTIONS INC. due to technical requirements not allowing deviation from specifications for materials presscribed and/or identified. Adherence to the technical data, engineering drawings and logistics documents are required to prevent unauthorized spares from being installed on board US Navy Ships and MSC Vessels. A determination not to compete this action based upon responses received to this notice is solely within the discretion of the Government.
The Government will evaluate the offeror’s price for reasonableness and past performance as part of the responsibility determination in accordance with RFO 12.203.
Anticipated Award Date: September / 2026
Contracting Officer: Kyle Singleton / Kyle.x.singleton.mil@us.navy.mil
[View original listing](https://sam.gov/opp/53c857c96f464925be0cd8da1b23ffdf/view)