The Amphenol PT series connectors, including the PT-SE and PT-CE sub-series, are high-density circular connectors compliant with MIL-DTL-26482 Series I standards. They feature a rugged circular shell with quick-disconnect bayonet coupling for easy mating and unmating. The PT series offers solder contacts, while the PT-SE provides high-performance crimp contacts, and the PT-CE is a commercial crimp option. These connectors are available in various mounting styles and shell sizes to suit different applications.