Feelers 1/2" PT Outer Hex Male Threaded PPR Pipe Plug End Cap Garden Hose Water Tubing Stopper Prevent Leakage Choke Fitting, Pack of 5, White

I had ordered some brass ones that claimed to be the right size and the leak still kept dripping. But one of these fit exactly, perfectly right. The tolerances were really nice. And the leak. stopped.

The quality of these looked good; but the description said they would work on garden hose threads and they do not. To plug a garden hose female end you need the 3/4” size; size seal but against the rubber gasket in the female garden hose end. I have no idea what the o-ring is for.

Perfect fit for the pvc pipe tee that holds the flow switch for pool salt cell when you remove it for winterizing.

Works great

My rain barrel came with an adaptor that leaked unless I sealed it shut with silicone, not vey useful when it came time to empty it to move. I decided to just complete replace it and these worked perfectly, plus I have extra incase the elements degrade it as it did with previous parts.