On Site Gas Systems Inc.

On Site Gas Systems Inc., a self-certified small disadvantaged business based in Newington, Connecticut, manufactures medical gas generation equipment and sensors sold to the Defense Logistics Agency as a prime contractor on delivery orders and purchase orders, with no set-aside competition across nearly all recent federal work.

On Site Gas Systems Inc. is a Subchapter S Corporation and for-profit manufacturer specializing in oxygen generators, nitrogen generators, portable oxygen systems, and related medical equipment components including oxygen sensors, carbon monoxide sensors, dew point sensors, calibration kits, filter elements, and associated accessories. The company competes full-and-open across its federal footprint — no recent awards carry small business set-aside designations, despite the vendor's self-certified small disadvantaged business status. A single total small business set-aside award for $224,220 (nitrogen generator system and storage banks to Air Force Warner Robins Air Logistics Complex, awarded January 2026) and two additional small business set-aside orders (one for $144,354.74 for a generating and characterization device to DLA in November 2025, one for $21,190.66 for POGS spare parts kit in June 2025, and one for $17,408.88 for portable oxygen generators in July 2025) represent exceptions in an otherwise full-and-open portfolio.

Customer concentration is extreme and decision-relevant: the Defense Logistics Agency Troop Support Medical division accounts for 1,005 of the vendor's 1,071 prime awards (97% of award count) and $294.8 million of the $307.2 million combined potential value across all awards. The source records 1,071 total prime awards across 1,005 to DLA Troop Support Medical alone, with the remaining 66 awards distributed across the Defense Logistics Agency (17 awards, $7.5 million), Department of the Army Medical Command (9 awards, $297 thousand), United States Marine Corps (4 awards), Air Force Warner Robins Air Logistics Complex (2 awards, $291 thousand), Department of Health and Human Services Centers for Disease Control and Prevention (1 award, $932 thousand), and others. This concentration reflects the vendor's role as a supplier within the federal medical supply chain ecosystem.

On Site Gas Systems Inc. holds two substantial indefinite delivery contracts with DLA Troop Support Medical under the Noncommercial Medical Equipment Program: IDC SPE2D124D0006 (award date December 21, 2023, ceiling $108,214,429.80, ultimate completion December 19, 2034) and a second IDC of equivalent value ($108.2 million) running through December 2033 or 2034. These two vehicles anchor the vendor's federal business; the source lists five parent IDVs by task-order volume, with IDC SPE2D118D0001 carrying 316 task orders ($13.7 million combined potential value), SPE2D124DA002 carrying 253 task orders ($910 thousand), and SPM2DH11D8217 carrying 132 task orders ($4.1 million). Task orders drawn against these vehicles range from sub-$100 items (teflon tape, connectors, wrenches) to high-value orders: a $115,754.82 dew point sensor delivery order in April 2025, a $40,408.78 timer assembly order in March 2026, and a $30,504.80 zero air calibration equipment order in March 2026.

Recent activity has accelerated significantly: the vendor recorded 23 awards in 2022, 15 in 2023, 122 in 2024, 158 in 2025, and 78 in the first four months of 2026. Combined obligated dollars across all awards total $56.1 million (18% of combined potential value), indicating active invoicing and recurring task orders. The recompete exposure window is not characterized in the source, but the dual $108.2 million IDCs running through 2033–2034 represent the vendor's core contract vehicles and therefore primary recompete risk in the 2033–2034 timeframe.

On Site Gas Systems Inc. lists one sub-award: a May 30, 2025 sub-award under KBR Services, LLC for medical support services in Iraq. The sub-award share is immaterial (one sub-award versus 1,070 prime awards, or 0.09% of total awards).

Place of performance for all recorded work is Newington, Connecticut, where the vendor manufactures its product line. The source characterizes the vendor as specializing in medical gas generation equipment and components for federal defense and civilian agencies, positioning it as a critical supplier within DLA's medical supply chain infrastructure. The award footprint spans 24 distinct customer agencies, though 97% of awards and 96% of dollar value funnel through DLA Troop Support Medical.

Design and manufacture oxygen and nitrogen generators for any customer application. Oxygen purity from 90%-99% with FDA clearance for USP 93% products. Nitrogen from 95% to 99.9995% purity. Systems in use in over 75 countries.