Implied Endorsement Is Hereby Withdrawn
I ordered both the 2.5 and the 3.5 oz. flasks from the website whose link appeared in my earlier post.
Tonight I filled the 3.5 oz. one, only to find that it leaked around the cap after I had filled it and tightened the cap until I felt resistance. Upon inspection, it turned out that the geometry of the cap retainer was wrong, causing resistance before a good seal was made.
I turned the cap another half turn. It still leaked. I tightened it a bit more, whereupon the retainer popped loose from the body of the flask. Another quarter turn finally produced a good seal.
Needless to say, I am very disappointed. Perhaps I expected too much for under $10. Nevertheless, I will communicate my disappointment to the seller and see what happens.
I guess I'd better check out the other one, too, before I make my inquiry.