This adapter appears to suffer from a design flaw in that it leaks easily from two locations identified in the image. The adapter itself is two separate parts of which your standard hose washers (like the extra ones included with this purchase) are just ill equip to fully prevent the flow of water; which will then get to the metal on metal part of the connection and leak in spot #2. I tried higher quality washers that have solved problems like this before pretty easily, eg with an older quick connect adapter, but in this case every washer I used was disfigured after moderately tightening it down on the male end of a hose. This leads me to believe the inner female chamber that the washer goes in is too wide/loose. Maybe with a larger non standard washer and some silicone grease you could get this adapter to work. But then even with copious amounts of Teflon tape on spot #1, I still couldn't get a perfect seal. With all of the other attachments I use for 3/4" GHT connections, non require this much pampering for seal of which I could never get with this product. Returning it, and would suggest others look elsewhere, particularly for a single piece adapter.
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