NPTF Threaded Flange with O-Ring Groove, Carbon Steel, 1/2\” NPTF x 1/2\” Code 61, includes Flange, Bolts, O-Rings – W43-8-8U Connection Type: Female Face Style: O-Ring Fitting Angle: Straight Flange Code: Code 61 Flange Size: 1/2 in Side 1 Size: 1/2 in Side 1 Type: NPT