The 1/4” O.D. Tube, Elbow Union meant for fixed position 90 degree fitting is manufactured in 316,303 Stainless steel with Viton,Buna-N,Silicone and EPDM seals and is capable of handling pressure up to 150psig. Permitting simple connection and disconnection,the Beswick Push-To-Connect style fittings has long since proved to be an ideal for use with wide variety of plastic and metal tubing including Polyurethane,Polyethylene,Nylon, Teflon, Copper, Stainless Steel and many others, only with the care that stainless steel tubing requires a groove in the OD of the tube to allow the gripping ring to secure the tube. The fabrication from stainless steel allows their use in corrosive and high temperature areas as well.In addition the unique O-ring seal design for leak-tight sealing at the interface is a benefit.