COASTAL SEAL SERVICES, LLC

Coastal Seal Services, LLC specializes in the design, installation, and maintenance of critical shaft and bulkhead sealing systems for marine vessels, with deep expertise in naval and coast guard propulsion train components. The company delivers precision-engineered solutions for stern tube seals, inflatable shaft seals, and shaft seal assemblies, ensuring watertight integrity under high-pressure, high-rotational environments. Their technical proficiency spans the repair and replacement of legacy and modern sealing systems used on U.S. Coast Guard cutters, NOAA research vessels, and Navy platforms, with a demonstrated ability to resolve complex discrepancies and implement mission-critical modifications under stringent operational constraints. Their niche lies in custom seal fabrication and field-service support for mission-essential marine propulsion systems, distinguishing them through rapid response, component-level diagnostics, and adherence to naval engineering standards. The contractor maintains a consistent relationship with the Department of Homeland Security, primarily supporting U.S. Coast Guard vessel sustainment through seal assembly replacements and maintenance on high-priority cutters. They also serve the Department of Defense on naval vessel propulsion sealing projects, including stern tube and shaft seal installations, and have delivered specialized sealing solutions for the Department of Commerce’s NOAA fleet, demonstrating adaptability across federal maritime agencies with shared operational requirements. Their primary industry focus is shipbuilding and repairing (NAICS 336611), where they function as a specialized Tier 2 supplier of marine sealing components and services. While they have one contract in other engine equipment manufacturing (NAICS 333618), their market positioning is firmly anchored in marine propulsion sealing systems, serving a narrow but mission-critical segment of the federal maritime infrastructure market. Coastal Seal Services, LLC is a small business based in Lincolnton, North Carolina, with no federal certifications on record. The company operates as a specialized technical service provider with a focused geographic footprint, positioning itself as a trusted niche vendor for high-reliability marine sealing solutions across federal maritime agencies.