Boyd is a global engineered-materials manufacturer that designs and makes technologies to seal, shield, insulate, and protect customer products. Founded in California in 1928 as an industrial fabricator, the company developed into a material-science and manufacturing business serving advanced markets; following the 2026 sale of its Thermal business to Eaton, its Engineered Materials business operates independently.
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Sur-SealFounded in Cincinnati in 1965 as a family-owned business, Sur-Seal manufactures engineered components that solve sealing, insulation, thermal-management and protection challenges. Its custom-converting work ranges from precision gaskets to molded and extruded parts, supported by engineering services and a manufacturing network that now spans the United States, Mexico and China. Sur-Seal’s history includes making gaskets for the Apollo missions, while its combined operations now encompass more than 400,000 square feet and over 500 employees.CINCINNATI, OH
AlkegenFormed in 2022 through the combination of Unifrax and Lydall, Alkegen develops and manufactures specialty materials that insulate, filter, seal and protect in demanding industrial applications. The company’s fiber-based technologies span high-temperature and cryogenic insulation, advanced air and liquid filtration, battery materials, fire protection and engineered gasket systems. With more than 60 manufacturing facilities and over 9,000 employees worldwide, Alkegen brings together deep materials expertise and a history reaching back to 1869.TONAWANDA, NY
Schlegel Electronic Materials, IncKnown for inventing highly conductive fabric-over-foam shielding gaskets in 1987, Schlegel Electronic Materials develops engineered materials that protect and manage heat in electronic systems. The Rochester-based company supports customers worldwide with custom solutions for applications ranging from telecommunications to medical and aerospace equipment, taking projects from prototype through production.ROCHESTER, NY
SCI Engineered Materials, IncSince its founding in Columbus in 1987, SCI Engineered Materials has grown into a global manufacturer of advanced materials for PVD thin-film applications. Its 32,000-square-foot Ohio facility keeps production in-house, supporting custom work for technologies ranging from photovoltaics to semiconductors.COLUMBUS, OH