Verified Nov 2026
CNC Machining
·
St. Louis, Missouri
·
Since 1945
Seiler Instrument & Mfg. Co. Inc. is a United States manufacturer headquartered in St. Louis, Missouri, founded in 1945. It employs an estimated 200-500 people and has an estimated annual revenue of $50-100M. Its primary capability is CNC machining, and it serves the automotive, electric-vehicle, construction, medical, military-defense, and industrial-equipment sectors. The company holds AS9100 and ISO 13485 certifications. In December 2025, it received a Gold Partner2Win Medallion at BAE Systems' seventh annual supplier symposium.
Seiler Instrument & Mfg. Co. Inc. at a glance
Revenue
$50-100M
Est. band
Employees
200-500
Founded
1945
Headquarters
St. Louis, Missouri
Certifications
AS9100 · ISO 13485
Import activity
20
Industries
Automotive
Electric Vehicles
Construction
Medical
Military & Defense
Industrial Equipment
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
20
Named foreign suppliers
6
Top origins
China · India · South Korea · Taiwan
Shared foreign counterparties do not establish that these companies buy from Seiler Instrument & Mfg. Co. Inc..
What this tells a buyer
Seiler announced in May 2026 the sale of its Autodesk and Bluebeam businesses to MicroCAD, as reported by The American Surveyor.
The company offers precision machining, assembly, and LED products, and holds AS9100 and ISO 13485 certifications.
Seiler is a privately held company with an estimated 200-500 employees, and it serves defense, medical, and industrial customers.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
STABILITY SIGNALS
Established & active
81 years in operation (founded 1945).
Holds AS9100, ISO 13485 certification(s) per public sources.
Overview
Seiler Instrument & Mfg. Co. Inc. is a United States manufacturer headquartered in St. Louis, Missouri, founded in 1945. It employs an estimated 200-500 people and has an estimated annual revenue of $50-100M. Its primary capability is CNC machining, and it serves the automotive, electric-vehicle, construction, medical, military-defense, and industrial-equipment sectors. The company holds AS9100 and ISO 13485 certifications. In December 2025, it received a Gold Partner2Win Medallion at BAE Systems' seventh annual supplier symposium.
At a glance
Attribute | Detail |
|---|---|
Founded | 1945 |
Headquarters | St. Louis, Missouri |
Employees | 200-500 |
Revenue | $50-100M (estimated) |
Primary capability | CNC Machining |
Certifications | AS9100 · ISO 13485 |
What Seiler Instrument & Mfg. Co. Inc. makes
The company offers precision machining, assembly, and LED products, and holds AS9100 and ISO 13485 certifications.
Products and capabilities described on the company's own site include Machining, Assembly, LED (source: seilersolutions.com).
Certifications
Seiler Instrument & Mfg. Co. Inc. is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
AS9100 — seilerprecision.com
ISO 13485 — seilermedical.com
Trade and customs footprint
Seiler announced in May 2026 the sale of its Autodesk and Bluebeam businesses to MicroCAD, as reported by The American Surveyor. US customs bill-of-lading records list 20 inbound shipments across 6 foreign suppliers, with top origins including China · India · South Korea · Taiwan.
Latest developments
2026-06-24 — Contract 12314426P0051 — Seiler Instrument And Manufacturing Company, Incorporated / Department Of Agriculture | BesaGov (besagov.com)
2026-05-11 — Seiler Announces Sale of Autodesk and Bluebeam Businesses to MicroCAD - The American Surveyor (amerisurv.com)
2026-01-30 — ______________________________________________________________________ Seiler Geospatial Expands into Louisiana, Arkansas & Mississippi | Tom Seiler (linkedin.com)
2026-01-30 — News | Seiler Geospatial (seilergeo.com)
2025-12-08 — Seiler received a Gold ‘Partner2Win’ Medallion at BAE Systems’ seventh annual supplier symposium | Seiler Precision Manufacturing (seilerprecision.com)
Company details
Seiler is a privately held company with an estimated 200-500 employees, and it serves defense, medical, and industrial customers. Seiler Instrument & Mfg. Co. Inc. was founded in 1945, has an estimated 200-500 employees, and is headquartered in St. Louis, Missouri. On the LightSource stability read it is rated "Established & active": 81 years in operation (founded 1945). Holds AS9100, ISO 13485 certification(s) per public sources.
Frequently asked questions
What does Seiler Instrument & Mfg. Co. Inc. make?
Seiler Instrument & Mfg. Co. Inc. is a United States manufacturer headquartered in St. Louis, Missouri, founded in 1945. It employs an estimated 200-500 people and has an estimated annual revenue of $50-100M. Its primary capability is CNC machining, and it serves the automotive, electric-vehicle, construction, medical, military-defense, and industrial-equipment sectors. The company holds AS9100 and ISO 13485 certifications. In December 2025, it received a Gold Partner2Win Medallion at BAE Systems' seventh annual supplier symposium.
Where is Seiler Instrument & Mfg. Co. Inc. headquartered?
Seiler Instrument & Mfg. Co. Inc. is headquartered in St. Louis, Missouri (3433 Tree Court Industrial Blvd, St. Louis, Missouri, 63122).
When was Seiler Instrument & Mfg. Co. Inc. founded?
Seiler Instrument & Mfg. Co. Inc. was founded in 1945.
How big is Seiler Instrument & Mfg. Co. Inc.?
Seiler Instrument & Mfg. Co. Inc. has an estimated 200-500 employees, with revenue in the $50-100M range (estimated).
What certifications does Seiler Instrument & Mfg. Co. Inc. hold?
Seiler Instrument & Mfg. Co. Inc. lists AS9100 · ISO 13485 on its website. Confirm the certified scope for the specific plant producing your part.
Does Seiler Instrument & Mfg. Co. Inc. import from overseas suppliers?
US customs bill-of-lading records show 20 inbound shipments for Seiler Instrument & Mfg. Co. Inc., with top origins including China · India · South Korea · Taiwan.
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Last verified Nov 2026. Is this your company? Request a correction.
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