Duramax Marine, LLC

Duramax Marine, LLC, a self-certified small disadvantaged business manufacturer headquartered in Hiram, Ohio, supplies specialized marine bearing components and propulsion system hardware to the federal government as a prime contractor on 998 awards (98% of footprint) and as a subcontractor to major maritime shipyards on 23 sub-awards. The company is structured as a limited liability partnership and competes predominantly in full-and-open competitions, though it holds multiple indefinite delivery contracts established under total small business set-asides with the Defense Logistics Agency.

Duramax Marine's core capability is manufacturing precision marine bearings, bearing staves, bearing sleeves, and related shaft components essential to naval vessel propulsion and steering systems. Representative work includes a $2.66 million Defense Logistics Agency Aviation purchase order for housing bearing units (NSN 3130-01-616-4011) awarded May 1, 2025; a $1.46 million DLA Aviation order for bearing half sleeves (NSN 3120-01-676-9020) awarded November 21, 2024; and a $762 thousand Naval Supply Systems Command order for bearing and propulsor components awarded September 26, 2025. The company also manufactures heat exchangers, shaft seals, stern tube bearings, and strut bearings to military specifications, including MIL-DTL-17901C and MIL-B-17901B standards.

Customer concentration is split between maritime logistics and operational agencies. The top five customers account for 81% of award count and 94% of combined potential value. Defense Logistics Agency Aviation leads by dollar magnitude ($15.9 million across 73 awards), followed closely by the Department of Homeland Security U.S. Coast Guard ($15.3 million across 232 awards) and Department of the Navy Naval Sea Systems Command ($10.7 million across 217 awards). DLA Land and Maritime accounts for $8.6 million across 265 awards, and Naval Supply Systems Command for $3.5 million across 40 awards. The portfolio spans 31 federal customer agencies; the concentration with DLA and Navy reflects demand for specialized marine propulsion components across the fleet maintenance ecosystem.

Duramax Marine's parent vehicles consist of three single-award indefinite delivery contracts with DLA: one with DLA Land and Maritime (ceiling $250 thousand, total small business set-aside, expired November 2023); one with DLA Aviation (ceiling $250 thousand, no set-aside, expired September 2023); and one with DLA Land and Maritime (ceiling $250 thousand, total small business set-aside, expired November 2022). The company also operates under a Coast Guard indefinite delivery contract (HSCG4014D52007) that has generated 30 task orders valued at $1.2 million. These vehicles enable streamlined procurement of routine bearing and component replenishment across CONUS and OCONUS depots.

Activity has remained steady over the past five years—44 to 45 awards annually—with 1,021 total awards on record since 2001. Nine awards with combined potential value of $5.1 million reach ultimate completion within the next twenty-four months, representing moderate recompete exposure as these IDCs and spot purchase orders cycle for renewal or new sourcing.

In its subcontractor role, Duramax Marine supplies bearing staves and propulsion components to major maritime shipyard primes: BAE Systems Jacksonville Ship Repair LLC, BAE Systems Maritime Solutions Norfolk Inc., Vigor Marine LLC, Metro Machine Corp., National Steel and Shipbuilding Company, and Electric Boat Corporation. These sub-awards support destroyer, amphibious transport dock, and submarine maintenance availabilities, grounding Duramax in the defense industrial base as a specialized supplier to the Navy's scheduled maintenance and modernization pipeline.

The company's NAICS concentration reflects its core manufacturing posture: Rubber Product Manufacturing for Mechanical Use (251 awards), Ball and Roller Bearing Manufacturing (188 awards), and Guided Missile and Space Vehicle Propulsion Unit Parts Manufacturing (141 awards). Federal procurement service code distribution confirms this—Ship and Boat Propulsion Components (473 awards), Bearings Plain Unmounted (152 awards), and Miscellaneous Ship and Marine Equipment (62 awards) dominate the portfolio. Work is performed at Duramax Marine's primary facility in Hiram, Ohio, with some deliveries staged through Curtis Bay in Baltimore, Maryland, a major Coast Guard logistics hub. The company's SAM.gov registration dates to August 2001, establishing a twenty-four-year federal contracting presence anchored in the maritime defense supply chain.