Fittings and Tubings Brass One-touch Fittings Series KQB Insert Fittings Series KF Series Features KQB Applicable tubing O.D. Connecting thread o4, o6, o8, o10, o12 M5, 1/8, 1/4, 3/8, 1/2  Material Body: Brass (C3604, C3771), Release button: Stainless steel 304 Seal: Special FKM  Fluid temperature: .5 to 150°C  Grease-free Series Features KF Applicable tubing O.D. Connecting thread o4, o6, o8, o10, o12 1/8, 1/4, 3/8, 1/2  Vacuum 1.3 x 10.2 kPa applicable  Piping can be done without removing nut.  Fluid temperature: .5 to 150°C (Brass sleeve) .5 to 60°C (Resin sleeve)  Steam can be used. (Brass sleeve)  Grease-free Resin sleeve Brass sleeve Grease-free Grease-free One-touch Fittings KQ2-X17, X29, X39, X94 Series Features KQ2 Applicable tubing O.D. Connecting thread o3.2, o4, o6, o8, o10, o12, o16 M5 x 0.8, M6 x 1.0 1/8, 1/4, 3/8, 1/2  One-touch connection  Vacuum from .100 kPa applicable X39 X94 Grease-free Rubber material: NBR (With fluoro coated) Color of release button: Light blue Symbol Specifications/Contents Grease-free Rubber material: NBR (With fluoro coated) Color of release button: Light blue Copper-free (Electroless nickel plated) Grease-free Rubber material: NBR (With fluoro coated) Color of release button: Light blue Clean specifications (Copper-free, Air blowing, Duplicate Package, Resin body: White) Grease-free Rubber material: FKM (With fluoro coated) Color of release button: Light blue X17 X29 Made to Order Grease-free 44 Grease-free Heat resistant