The Amphenol PT series and PT-SE series connectors conform to MIL-DTL-26482 Series I standards and feature high-density contact arrangements within a circular shell. The PT series uses solder contacts, while the PT-SE series offers high-performance crimp contacts, and the PT-CE series provides a commercial crimp option. These circular connectors are designed for quick-disconnect bayonet coupling, facilitating rapid mating and un-mating. They are available in various mounting styles and shell sizes, making them suitable for a range of applications.