NZD $20.90
For adapting an -8 male ORB to a -6 male ORB, you will need a straight O-ring Boss (ORB) reducer adapter with a female -8 ORB port and a male -6 ORB port.
This fitting will enable you to connect a larger ORB port to a smaller one. Note that ORB sizing refers to the thread diameter, not the hose or pipe size, and the seal is provided by the O-ring rather than the threads.Â