SEILER INSTRUMENT AND MANUFACTURING COMPANY, INCORPORATED
Manual Machining•SAINT LOUIS, MO
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Company Highlights
- Seiler Instrument and Manufacturing Company, Incorporated is a precision manufacturing company specializing in optical fire control equipment and precision machining primarily for the defense sector.
- Headquartered in St. Louis, Missouri, it operates a large manufacturing facility focused on machining, assembly, and testing of optical instrument components used in military howitzer and mortar systems.
- The company is family-owned and has a long history dating back to 1945, with diversified divisions including Geospatial, Medical, and Planetarium, but the manufacturing division is focused on high precision contract manufacturing.
- Seiler offers end-to-end manufacturing services from prototype through production, with capabilities in complex mechanical assemblies and electrical box builds.
- The company holds certifications and compliance programs relevant to defense manufacturing and emphasizes quality and traceability.
About
SEILER INSTRUMENT AND MANUFACTURING COMPANY, INCORPORATED is a leading automotive specialist serving SAINT LOUIS and surrounding areas since 1994. We specialize in CNC Machining, Stamping, Die Casting with ISO 9001:2015 certification. Our 1+ machines and experienced team deliver quality parts on time.
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Last updated: January 17, 2026
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