Brennan 6801-10-10-NWO-FG Forged Steel JIC Flared Tube Fitting, 90 Degree Elbow, 5/8" Tube OD JIC Male x 7/8-14 Male Straight Thread O-Ring Boss 90-degree elbow for connecting two pipes or tubes at an angle Fitting connects to tubing on one end and a male straight thread O-ring boss on the other Forged steel for weldability, rust resistance, and durability For use with tubing that is flared 37 degrees for tight seal Operating temperature range from -63 to 400 degrees F