Pentair O-Ring Drain Plug

XtremepowerUS 1.5" Pool Spa Return Line Winterizing Pool Filter Drain Plug 2PCS

XtremepowerUS 4pcs 1.5" Pool Spa Return Line Winterizing Pool Filter Drain Plug

Drain Plug Cap Assembly Replaces 190030 Fits for Pool and Spa Filter with O-Ring

Pentair | Sta-Rite Filter Drain Plug w/ O-Ring

Hayward Drain Plug and Gasket with O-ring Mounting Plate Replacement for Select

Pool Plug Cap Drain Plug Plastic Pool Return Line Winter Plug With O-Ring 2-Pack