Verified Nov 2026
Metal Fabrication
·
Burlington, Massachusetts
·
Since 1999
CIRCOR International, Inc. is a flow control and engineered solutions company headquartered in Burlington, Massachusetts, United States. Founded in 1999, it has an estimated 1,000-5,000 employees and an estimated revenue band of $1-5B. In 2023 it became a privately held company after its acquisition by KKR. It serves the industrial, aerospace and defense, automotive, electric-vehicle, electronics, medical, and plumbing hardware sectors, and holds AS9100 and IATF 16949 certifications. In October 2025 it acquired a herringbone gear pump product line from Flowserve.
CIRCOR International, Inc. at a glance
Revenue
$1-5B
Est. band
Employees
1,000-5,000
Founded
1999
Headquarters
Burlington, Massachusetts
Certifications
AS9100 · IATF 16949
Import activity
2757
Industries
Automotive
Electric Vehicles
Electronics
Medical
Military & Defense
Plumbing & Hardware
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
2757
Named foreign suppliers
50
Top origins
China · South Korea · Sri Lanka · Taiwan
Shared foreign counterparties do not establish that these companies buy from CIRCOR International, Inc..
What this tells a buyer
No customs or trade data is available for the company, and its most recent reported development is the February 2026 appointment of Saif Siddiqui as chief executive officer, as published on circor.com.
Its product range includes valves, pumps, electric motors, gears, seals, and assemblies, with manufacturing facilities listed in Burlington, Massachusetts, Corona, California, and Weihai, China.
The company is privately held following its 2023 acquisition by KKR, and in May 2026 Parker-Hannifin announced it would acquire CIRCOR's commercial and defense aerospace business.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
STABILITY SIGNALS
Established & active
27 years in operation (founded 1999).
Holds AS9100, IATF 16949 certification(s) per public sources.
Overview
CIRCOR International, Inc. is a flow control and engineered solutions company headquartered in Burlington, Massachusetts, United States. Founded in 1999, it has an estimated 1,000-5,000 employees and an estimated revenue band of $1-5B. In 2023 it became a privately held company after its acquisition by KKR. It serves the industrial, aerospace and defense, automotive, electric-vehicle, electronics, medical, and plumbing hardware sectors, and holds AS9100 and IATF 16949 certifications. In October 2025 it acquired a herringbone gear pump product line from Flowserve.
At a glance
Attribute | Detail |
|---|---|
Founded | 1999 |
Headquarters | Burlington, Massachusetts |
Employees | 1,000-5,000 |
Revenue | $1-5B (estimated) |
Primary capability | Metal Fabrication |
Certifications | AS9100 · IATF 16949 |
What CIRCOR International, Inc. makes
Its product range includes valves, pumps, electric motors, gears, seals, and assemblies, with manufacturing facilities listed in Burlington, Massachusetts, Corona, California, and Weihai, China.
Products and capabilities described on the company's own site include Electric Motor, Electronics, Pump, Steel, Gear, Valve, Seal, Assembly (source: circor.com).
Certifications
CIRCOR International, Inc. is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
AS9100 — circor.com
IATF 16949 — circor.com
Trade and customs footprint
No customs or trade data is available for the company, and its most recent reported development is the February 2026 appointment of Saif Siddiqui as chief executive officer, as published on circor.com. US customs bill-of-lading records list 2757 inbound shipments across 50 foreign suppliers, with top origins including China · South Korea · Sri Lanka · Taiwan.
Latest developments
2026-10-30 — CIRCOR to Expand Industrial Portfolio with Acquisition of Green Silence Group S.p.A. | CIRCOR (circor.com)
2026-05-21 — Parker to Acquire CIRCOR’s Commercial and Defense Aerospace Business :: Parker-Hannifin Corporation (PH) (parker.com)
2026-02-02 — Saif Siddiqui Named Chief Executive Officer of CIRCOR. Tony Najjar Appointed Vice Chairman of Board of Directors. | CIRCOR (circor.com)
2026-01-20 — City seeks grant to assist CIRCOR in $16 million expansion - Adair County Community Voice (adairvoice.com)
2025-10-08 — CIRCOR International Acquires Herringbone Gear Pump Product Line from Flowserve | CIRCOR (circor.com)
2025-09-30 — CIRCOR International Completes Acquisition of Swelore Engineering and Hiro Nisha Systems | CIRCOR (circor.com)
Facilities
CIRCOR International, Inc. is headquartered in Burlington, Massachusetts. Public sources also reference these locations:
Burlington, Massachusetts — circor.com
Corona, California — circor.com
Weihai, China — circor.com
Company details
The company is privately held following its 2023 acquisition by KKR, and in May 2026 Parker-Hannifin announced it would acquire CIRCOR's commercial and defense aerospace business. CIRCOR International, Inc. was founded in 1999, has an estimated 1,000-5,000 employees, and is headquartered in Burlington, Massachusetts. On the LightSource stability read it is rated "Established & active": 27 years in operation (founded 1999). Holds AS9100, IATF 16949 certification(s) per public sources.
Frequently asked questions
What does CIRCOR International, Inc. make?
CIRCOR International, Inc. is a flow control and engineered solutions company headquartered in Burlington, Massachusetts, United States. Founded in 1999, it has an estimated 1,000-5,000 employees and an estimated revenue band of $1-5B. In 2023 it became a privately held company after its acquisition by KKR. It serves the industrial, aerospace and defense, automotive, electric-vehicle, electronics, medical, and plumbing hardware sectors, and holds AS9100 and IATF 16949 certifications. In October 2025 it acquired a herringbone gear pump product line from Flowserve.
Where is CIRCOR International, Inc. headquartered?
CIRCOR International, Inc. is headquartered in Burlington, Massachusetts (30 Corporate Drive, Burlington, Massachusetts, 01803).
When was CIRCOR International, Inc. founded?
CIRCOR International, Inc. was founded in 1999.
How big is CIRCOR International, Inc.?
CIRCOR International, Inc. has an estimated 1,000-5,000 employees, with revenue in the $1-5B range (estimated).
What certifications does CIRCOR International, Inc. hold?
CIRCOR International, Inc. lists AS9100 · IATF 16949 on its website. Confirm the certified scope for the specific plant producing your part.
Does CIRCOR International, Inc. import from overseas suppliers?
US customs bill-of-lading records show 2757 inbound shipments for CIRCOR International, Inc., with top origins including China · South Korea · Sri Lanka · Taiwan.
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Last verified Nov 2026. Is this your company? Request a correction.
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