Rudolph Brothers & Co

Rudolph Brothers & Co, operating as Rudolph Bros. & CO. Division from Canal Winchester, Ohio, is a self-certified small disadvantaged business that manufactures and distributes industrial adhesives, sealing compounds, coatings, and specialty chemical products to the Department of Defense as a prime contractor on over 1,500 purchase orders and delivery orders. The vendor competes full-and-open across its federal footprint, with no material small business set-aside posture despite its SDB designation; roughly 98% of its recent awards carry no set-aside designation, and the few set-aside wins (Total Small Business, HUBZone, Service-Disabled Veteran-Owned Small Business) account for a small share of total volume.

Rudolph Brothers concentrates almost entirely on Defense Logistics Agency Troop Support Construction and Equipment, which accounts for 1,384 awards (91% of the 1,519 total) and $8.9 million of the $25.5 million combined potential value across all awards. Within that single customer, the vendor executes low-dollar, high-frequency purchase orders—typically $1,000 to $40,000 per order—for adhesives, rust-arresting coatings, gasket-forming compounds, sealing compounds, polyurethane coatings, corrosion-resistant products, and antiseize compounds used in military aircraft maintenance and equipment repair. A secondary concentration appears in the Department of the Air Force Materiel Command Oklahoma City Air Logistics Complex, which anchors $14.3 million in combined potential value (four awards including a $13.3 million indefinite delivery/indefinite quantity contract with the Air Logistics Complex at Tinker Air Force Base through 2024). Recent representative awards include a $79.8 thousand adhesive delivery order to DLA Troop Support Construction and Equipment (September 2024), a $74.9 thousand insulating varnish purchase order to DLA Aviation (August 2024, Total Small Business set-aside), and a $39.8 thousand sealing compound order with a July 2025 award date. The vendor also holds minor positions with the Department of the Navy Naval Sea Systems Command (32 awards, $215 thousand), GSA Federal Acquisition Service (31 awards, $977 thousand), and the Department of the Army Installation Management Command Southeast Region (7 awards, $228 thousand).

Rudolph Brothers sits on two high-volume DLA indefinite delivery contracts—SPE8ES17D5006 and SPE8ES17D5013—which together account for 712 task orders and $224 thousand in combined potential value, serving as the primary vehicles for its purchase-order flow. The vendor also holds Blanket Purchase Agreements under GSA Schedule GS06FAA367 (14 task orders, $61 thousand) and GS06FAA615 (5 task orders, $70 thousand). Its subcontractor footprint is minimal: five sub-awards across the portfolio, primarily to ASRC Federal Facilities Logistics, LLC for adhesive services on Defense Logistics Agency task orders (February, May, November 2024, and February 2025), and one antenna reflector sub-award to General Dynamics Mission Systems, Inc. (October 2025).

Activity has grown moderately year over year from eight awards in 2022 to forty-five in 2025, though the award count in 2026 (twenty-five as of April 2026) suggests a run-rate decline. The vendor has registered with SAM since July 2001 and has been awarded continuously by DLA since at least 2021. Its product portfolio is tightly defined: adhesive manufacturing (1,392 awards) dominates the NAICS concentration, with adhesives as the top PSC code (1,375 awards). The business model rests on supply-chain reliability for commodity chemical products—routine replenishment orders, firm fixed-price terms, and consistent on-time delivery to military depots and logistics centers. Rudolph Brothers has no material presence outside the defense industrial base; civilian federal agencies account for less than 2% of award count.

Customers are buying from Rudolph Bros. & Co. where their finding value in:

Quick response times, Qualified sales engineers, Logistical Support and Third party ISO quality registration.