Kirkhill, Inc.

Kirkhill, Inc., a wholly-owned subsidiary of TransDigm Group Incorporated headquartered in Brea, California, manufactures specialty nonmetallic seals, elastomeric gaskets, and related aerospace defense components, competing as a prime contractor on full-and-open federal procurements with no SBA set-aside designations across 88% of its recent award footprint.

Kirkhill operates primarily as a supplier to the Defense Logistics Agency, winning 455 federal awards over the past several years with a recent combined potential value of $19.7 million. The company's capability portfolio centers on high-performance elastomer products—nonmetallic seals in specialty shapes, aircraft component boots, duct assemblies, gaskets, structural seals, landing gear seals, rudder balance seals, and protection bellows—all manufactured to military specifications for aerospace and defense platforms. Representative prime work includes a $188.2 million firm fixed-price purchase order from DLA Aviation for aircraft air conditioning duct assemblies (awarded December 2025, ultimate completion June 2026), a $233.3 million DLA Aviation order for aircraft structural seals (awarded October 2024, May 2025 completion), and a $221 million DLA Land and Maritime contract for nonmetallic special-shape seals (awarded May 2024, December 2024 completion). Kirkhill also holds five active indefinite delivery contracts with DLA Land and Maritime, each valued at $250,000 to $350,000, for nonmetallic seals and gasket procurement through 2027.

Customer concentration is extreme. DLA Land and Maritime accounts for 243 awards and $11.1 million in combined potential value (56% of the portfolio by dollars), while DLA Aviation holds 157 awards and $8.4 million (43% by dollars). Together, these two DLA divisions represent 400 of 455 awards (88% by count) and 97% of combined potential value. The remaining customer set—NASA Marshall Space Flight Center, DLA Construction and Equipment, and Naval Air Systems Command—comprises less than 3% of dollars. All named federal awards carry firm fixed-price commercial-item pricing with no set-aside restrictions.

Kirkhill's subcontractor footprint is substantial and reflects its role as a critical elastomer supplier to major primes. Named sub relationships include ongoing work under the Space Launch System (SLS) Booster Production and Operations Contract (BPOC) with ATK Launch Systems LLC for synthetic rubber manufacturing (multiple 2025–2026 task orders), and recurring common aerospace commodities supply to The Boeing Company across multiple platforms—C-17 Globemaster III sustainment, F-15EX advanced procurement, P-8A aircraft, CH-47F helicopters, CMV-22 production, and aircraft interiors work. Bell Boeing Joint Project Office is also a named prime for Navy aviation common aerospace commodities. Kirkhill's subcontract awards number 53 (12% of the portfolio) and reflect integration into major defense prime supply chains rather than competition as a prime on large system contracts.

The company's vehicle position is rooted in single-award indefinite delivery contracts with DLA Land and Maritime. The five active IDCs cited in the source—each valued at $250,000 to $350,000 with completion dates from September 2026 through March 2027—anchor Kirkhill's DLA footprint and enable rapid task-order issuance for maintenance and replacement seal procurement across defense logistics depots. No GWACs, agency-wide IDIQs, or GSA Schedules are named in the source; the award portfolio is almost entirely DLA-direct procurement through purchase orders and delivery orders against these standing IDCs.

Activity has grown significantly year over year—81 awards in 2022 to 119 in 2024—before moderating slightly to 106 in 2025 and 34 in 2026 (a partial-year snapshot through mid-May). Eighteen awards with ultimate completion dates in the next twenty-four months carry combined potential value of $1.3 million and represent recompete exposure, primarily across DLA Land and Maritime nonmetallic seal IDCs expiring in 2026 and 2027.

Category concentration is narrow and decision-relevant. Gasket, Packing, and Sealing Device Manufacturing (NAICS 339991) accounts for 258 of 455 awards; Other Aircraft Parts and Auxiliary Equipment Manufacturing (NAICS 336413) accounts for 72; and Guided Missile and Space Vehicle Propulsion Unit Parts Manufacturing (NAICS 336415) for 23. By Product Service Code, Packing and Gasket Materials (PSC category) dominates with 289 awards, followed by Airframe Structural Components (40) and Aircraft Air Conditioning and Pressurization Equipment (12). This concentration reflects Kirkhill's specialized, single-capability footprint: the company does not diversify into IT services, program management, or systems integration—it manufactures elastomeric seals and related components and competes on technical capability, source-control approvals, and delivery performance rather than on breadth of service lines.

Kirkhill sources 100% of its federal revenue from Defense Department customers (primarily DLA) and NASA, with no civilian agency work in the source. Obligated dollars ($24.5 million) exceed potential value ($19.7 million by 125%), indicating significant contract performance at invoiced rates. All prime awards carry no set-aside language; the vendor competes on unrestricted solicitations open to all responsible sources and does not leverage any 8(a), HUBZone, SDVOSB, WOSB, or other socioeconomic designations.