Legris 3606 08 00 Nickel-Plated Brass Push-to-Connect Fitting, Inline Union, 5/16" or 8 mm Tube OD Inline union to connect two tubes Push-to-connect tube connections on both ends FDA-approved nickel-plated brass Handles pressures up to 435 psi (30 bar), an operating temperature range of -20 to +150 degrees C (-4 to +302 degrees F), and a vacuum capability of 755 mm Hg Meets RoHS, FDA standard, and 1935/2004/EC specifications