
What began as a father-and-son venture in a small workshop evolved into a global leader in engineered carbon-graphite materials. Carl’s technical innovations in metallization and Preston’s vision for business growth created a foundation that has sustained nearly eight decades of continuous family-influenced innovation.
From its early work in industrial bearings to modern aerospace, defense, and space applications, Metcar’s journey reflects both family legacy and technical excellence. With milestones including global expansions to Mexico, Asia, and China, ISO and ITAR certifications, and ongoing investment in aerospace and carbon assembly development, the company remains a testament to the Siebert family’s original ingenuity and enduring commitment to engineered excellence.
















