Smiths Group Plc engages in the development, manufacture, and sale of control systems and instruments for industrial applications. The firm operates through four divisions: John Crane, Smiths Detection, Flex-Tek and Smiths Interconnect. Its John Crane segment is engaged in providing mechanical seals, seal support systems, power transmission couplings and specialized filtration systems. Its Smiths Detection segment offers sensors and systems that detect and identify explosives, narcotics, weapons, chemical agents, biohazards and contraband. Its Flex-Tek segment offers engineered components, flexible hosing and rigid tubing that heat and move fluids and gases. The Smiths Interconnect segment offers specialized electronic and radio frequency board-level and waveguide devices, connectors, cables, test sockets and sub-systems used in high-speed, high reliability, secure connectivity applications. The company is also a manufacturer of heating, ventilation & air conditioning (HVAC) solutions. The firm has operations in more than 50 countries.