Grounded in our commitment to quality and driven by a passion for discovery, Seiler partners with clients in a variety of industries to deliver unrivaled solutions.



Seiler is proud to support the Armed Forces of the United States directly, and also through many DoD prime contractors. Seiler manufactures components used on many U.S. military weapons and vehicle platforms, to include the Abrams Tank, M109 self-propelled howitzer, towed howitzers, armored vehicles, mortar weapons, chain-fed autocannons, and many more.

M1A1 Abrams tank


We take our aerospace clients to new heights with high-tolerance parts that surpass standards. Seiler produces components for many commercial and defense aerospace applications, to include multiple aircraft platforms and missile components. Seiler maintains a quality management system certified to AS9100D.

Optical Fire Control Systems

Seiler is the original equipment manufacturer (OEM) for the sighting systems used on all U.S. Army and Marine Corps Howitzer and Mortar platforms. Seiler maintains the ability to produce new or repair and refurbish all Howitzer and Mortar optical fire control systems.

Sgt. Joseph Kammerer, a cannon crewmember with C Battery, 3rd Battalion, 320th Field Artillery Regiment, 3rd Brigade Combat Team, 101st Airborne Division (Air Assault), shouts commands during a direct fire live fire on a range at Fort Knox, KY April 25, 2022.


Seiler partners with commercial businesses of all kinds to boost efficiency with products that outlast and outperform competitors. Seiler produces contract-manufactured components and assemblies for a variety of commercial applications and customers.

Medical & Healthcare

Using leading technology, we give medical professionals tools to pioneer breakthrough solutions. Seiler manufacturers products for a broad range of customers in the medical field, ranging from surgical tools to microscopy components.