Pneuflex's model of SPG 14-12 is 14mm to 12mm stainless steel union straight reducer push to connect fittings, used to connect 14mm O.D tubing to 12mm O.D tubing in the same direction. 14mm to 12mm SS union straight reducer push-in fittings has a 316 stainless steel body, with 301 SS lock claw & FKM ( Viton ) seal, commonly used in food and other aggressive environment.