Senior plc designs, manufactures, and sells high-technology components and systems for the principal original equipment manufacturers in the aerospace, defense, land vehicle, and power and energy markets in the United States, the United Kingdom, and internationally. It operates in two segments, Aerospace and Flexonics. The Aerospace segment comprise fluid conveyance systems that include high and low pressure ducting systems, control bellows, sensors, and assemblies; gas turbine engines, such as precision-machined and fabricated engine components, fluid systems, and ducting and control products; and structures consist of precision-machined airframe components and assemblies. The Flexonics segment comprises land vehicle emission control products, which include exhaust gas recirculation coolers, fuel mixing and distribution systems, and flexible couplings; and industrial process control products that consist of flexible hose assemblies and control bellows, fuel cells and heat exchangers, and precision-machined components., as well as engineered expansion joints, dampers, and diverters. The company was formerly known as Senior Engineering Group plc and changed its name to Senior plc in 1999. Senior plc was founded in 1836 and is headquartered in Rickmansworth, the United Kingdom.