Hydraulic Adapter 1/2" Male O-Ring X 1/2” Male PipeOne New Aftermarket Replacement Hydraulic Adapter 1 2" Male O Ring Fits Boss x 1 2" Male Pipe (NPT) This straight hydraulic adapter fitting connects a 1 2" SAE O Ring Fits Boss (ORB) male port to a 1 2" NPT male pipe thread, providing a reliable, leak resistant transition between O ring sealed hydraulic ports and standard pipe thread connections. Constructed from pressure resistant carbon steel, this adapter is suited for agricultural, construction,