Material / Body, Union nut: Brass Sleeve: Resin or Brass Maximum operating temperature / 150°C (Brass sleeve) 60°C (Resin sleeve) Applicable tubing material / FEP . PFA . Modified PTFE . Nylon Soft nylon . Polyurethane Polyolefin . Soft polyolefin Can be used with steam. (For brass sleeve) Grease-free Insert An insert mechanism can provide reliable retaining force on tubes made of a wide variety of materials Tube grip (resin sleeve) �� Tube is easily held by a unique configuration �� Slipping and dropping of sleeve and union nut is prevented A reliable seal Holds the tube tightly Union nut �� No need to remove nuts �� Tube can be installed as-is Superior tube mounting Tube holder �� Prevents tubes from being disconnected during piping. �� A strong feeling when inserting tube Sleeve �� Light tightening torque �� Can be used from medium vacuum up to 1 MPa Series KF Insert Fittings 129 KQ2 KQB2 KS KX KM KF M H/DL L/LL KC KK KK130 DM KDM KB KR KA KQG2 KG KFG2 MS KKA KP LQ MQR T