This part is a face plate drain plug for Aqua-Flo pumps.. It does not come with an O-Ring you will find the link to that below..
Aqua-Flo Pump, Drain Plug, O-Ring Xp2, Xp2e, XP3, 7/16" ID, 3/32"...
This part is an Air Bleeder barbed plug and O-Ring for Jacuzzi and Sundance Piranah Pump Faces Only.. Hot Tub Pump Faces to bleed the air off the pump while filling the tub up. This barb...