Sinclair Manufacturing

Sinclair Manufacturing Company, now a division of Hermetic Solutions Group, is a specialized manufacturer of high-reliability hermetic packages and glass-to-metal seals. Founded in 1946 and based in Norton, Massachusetts, the company provides critical components for the medical, aerospace, and defense industries. In the healthcare sector, its products are essential for life-sustaining implantable medical devices such as pacemakers, defibrillators, and cochlear implants, where they protect sensitive electronics from the physiological environment. The company's expertise includes custom-designed microwave and fiber optic packages, utilizing advanced machining and toolmaking processes to meet stringent quality standards.