Introducing the KQ2S Series Metric Size Uni One-Touch Fittings, featuring a Hexagon Socket Head Male Connector with a Gasket Seal. These fittings are designed for use in vacuum environments down to -100 kPa, ensuring reliable performance across a wide range of applications. With a total of 51 models, they offer versatility and flexibility. The fittings are available in brass with no plating or with electroless nickel plating for enhanced corrosion resistance. They support various tubing O.D. sizes, both circular (metric: Φ2, Φ3.2, Φ4, Φ6, Φ8, Φ10, Φ12, Φ16; inch: Φ1/8", Φ5/32", Φ3/16", Φ1/4", Φ5/16", Φ3/8", Φ1/2") and oval (metric: Φ3.2, Φ4, Φ6; inch: Φ1/8", Φ5/32", Φ3/16"). The connection threads include metric (M3, M5, M6), R, Rc, G, NPT, and Uni, ensuring compatibility with various systems. Seal methods available are sealant, gasket seal, face seal, and gasket seal for Uni threads, providing secure and leak-proof connections. The KQ2S Series is your go-to solution for dependable and efficient pneumatic fittings.