Parker-Hannifin Corporation manufactures and sells motion and control technologies and systems for various mobile, industrial, and aerospace markets worldwide. The company operates in two segments, Diversified Industrial and Aerospace Systems. The Diversified Industrial segment provides static and dynamic sealing devices; filters, systems, and diagnostics solutions to monitor and remove contaminants from fuel, air, oil, water, and other liquids and gases; connectors, which control, transmit, and contain fluid; hydraulic, pneumatic, and electromechanical components and systems for builders and users of industrial and mobile machinery and equipment; and critical flow components for process instrumentation, healthcare, and ultra-high-purity applications, as well as components for use in refrigeration and air conditioning systems, and in fluid control applications for processing, fuel dispensing, beverage dispensing, and mobile emissions. This segment sells its products to original equipment manufacturers and their replacement markets in manufacturing, packaging, processing, transportation, mobile construction, refrigeration and air conditioning, agricultural, and military machinery and equipment industries.

The Aerospace Systems segment offers products for use in commercial and military airframe and engine programs, including control actuation systems and components, engine systems and components, fluid conveyance systems and components, fuel systems and components, fuel tank inserting systems, hydraulic systems and components, lubrication components, pneumatic control components, power conditioning and management systems, thermal management products, and wheels and brakes.

This segment markets its products directly to original equipment manufacturers and end users. The company markets its products through direct-sales employees, independent distributors, and sales representatives. Parker-Hannifin Corporation was founded in 1918 and is headquartered in Cleveland, Ohio.