Pneumatic fittings are essential components used in pneumatic systems to connect various parts, such as hoses, tubes, and valves. They help create a secure and leak-free connection, allowing compressed air to flow efficiently through the system. These fittings come in various shapes and sizes, designed to accommodate different applications and pressure levels. Typically made from materials like brass, stainless steel, or plastic, pneumatic fittings can be categorized into several types, including push-to-connect, threaded, and quick-disconnect fittings. Proper selection and installation of these fittings are crucial for the overall performance and safety of pneumatic systems.