Coastal Seal Services, LLC

Coastal Seal Services, LLC, a veteran-owned small business based in Lincolnton, North Carolina, provides shaft seal installation, repair, vulcanization, testing, and alignment services for naval and Coast Guard vessels as a prime contractor (100% of recorded awards) across both small-business set-asides and full-and-open competitive procurements. The company is structured as a for-profit limited liability company and competes under Total Small Business set-asides on the majority of its direct Coast Guard purchase orders, while Naval Sea Systems Command and Military Sealift Command work runs unrestricted.

Coastal Seal Services' customer concentration is heavily weighted toward maritime propulsion systems across two dominant Navy customers. The Department of the Navy Military Sealift Command anchors the portfolio with 23 awards valued at $74.3 million combined potential value — approximately 96% of the vendor's total addressable federal pipeline — and represents an indefinite delivery contract for comprehensive engineering and technical maintenance services for Wartsila brand equipment aboard Military Sealift Command vessels. The Department of Homeland Security U.S. Coast Guard represents volume (96 awards) but dollar concentration in smaller magnitude, with $1.7 million combined potential value across shaft seal installation, overhaul, and testing work on individual cutters including the CGC Bear, USCGC Campbell, USCGC Cormorant, USCGC Manatee, and USCGC Legare. The Department of the Navy Naval Sea Systems Command carries 52 awards totaling $1.6 million for stern tube shaft seal services, seal vulcanization, inflatable seal supply, and technical oversight on Nimitz-class aircraft carriers and other hull platforms. A single National Oceanic and Atmospheric Administration award in 2024 for bulkhead seal replacement on the NOAA Ship Ferdinand Hassler rounds out the customer set.

Coastal Seal Services' capability footprint is narrowly specialized: the top NAICS classification is Ship Building and Repairing (93 awards), followed by Commercial and Industrial Machinery Repair and Maintenance (29 awards) and Gasket, Packing, and Sealing Device Manufacturing (14 awards). Representative recent work includes a $141,419 purchase order from the Coast Guard in September 2026 for disassembly, cleaning, inspection, repair, and reassembly of the controllable pitch propeller oil distribution box aboard CGC Bear with hydraulic system fluid sampling and post-repair operational testing; a $48,280 purchase order from the Coast Guard in June 2025 for technician services in shaft seal maintenance; an $85,230 purchase order from Naval Sea Systems Command in June 2023 for stern tube shaft seal services; and recurring small purchase orders under Military Sealift Command's multi-million-dollar IDV for Wartsila equipment engineering and maintenance. Activity has remained modest and flat over the past five years (two awards in 2022 through six in 2026), with only $25 thousand in awards reaching ultimate completion within the next twenty-four months, indicating minimal near-term recompete exposure. Only $4.1 million of the $77.6 million combined potential value has been obligated to date (5%), reflecting the company's reliance on small, discrete purchase orders rather than standing task-order consumption on large vehicles.