This O-ring serves as a replacement for the bottom seal of a Sanke U coupler.
Stainless Steel Tri-Clover 3-Piece Ball Valve - 1" TC X 1/2" Female NPT
Stainless Steel Tri-Clover Extension Tube With PRV - 1.5" TC (1 3/4")
Stainless Steel Tri-Clover Micro Sight Glass - 2" TC
BrewZilla All Grain Brewing System - IEC Power Cord