Senior Plc designs, manufactures and markets technology components and systems. The company operates its business through two divisions: Aerospace and Flexonics. The Aerospace division offers various products and systems for structures, fluid conveyance, and gas turbine engines. Its products include airframe and system components & assemblies; high-pressure and low-pressure engineered ducting systems; engineered control bellows, sensors and assemblies; fabricated engine components; and fluid systems ducting & control products. The Flexonics division manufactures flexible automotive components, and offers products for land vehicle emission control and industrial process control applications. This segment's products include exhaust gas recycling coolers, fuel mixing & distribution systems, flexible couplings, engineered expansion joints, dampers & diverters, flexible hose assemblies & control bellows, and fuel cells & heat exchangers. The company serves the aerospace, defense, land vehicle and energy markets. Senior was founded by David Lycett Green on December 18, 1933 and is headquartered in Rickmansworth, the United Kingdom.