This SMC KQ2P-23 plug tube fitting has a 3.2 mm OD and 31.5 mm length, and is intended for use in terminating SMC KQ2 series push-to-connect fittings. The white color polybutylene terephthalate (PBT) fitting resists corrosion and has an operating temperature range of -5 to +60 degrees C. It has a maximum operating pressure of 145 pounds per square inch (psi) and a maximum operating vacuum of -100 kilopascals (kPa). This KQ2 series plug tube fitting is suitable for use with air and water in both vacuum and pressure applications, such as in food processing.Tube fittings are components used for connecting, branching, terminating, and changing the direction of tubing in pneumatic and hydraulic systems. They are made of brass, stainless steel, polybutylene terephthalate (PBT), and other materials that resist corrosion and wear. Tube fittings have various types of connections, including threaded, welded, barbed, and push-to-connect (also called one-touch). Push-to-connect connections do not require tools or sealants. Tube fittings are used in various applications, including machine tools, airplane and truck controls, and automated production lines, among others.SMC Corporation manufactures actuators, valves, airline equipment, connector fittings, electrical products, vacuum products, dryers, temperature control chillers, and accessories. SMC Corporation of America is headquartered in Noblesville, IN, and meets International Organization for Standardization (ISO) standards 9000:2000 and 9001:2008.