I bought this to use as a dip tube inside the kettle. With a 1/2 inch bent piece of copper inserted into this fitting, a nice boil friendly dip tube can be made. I have heard the copper is good for the wort, and so far have not had any trouble with this fitting withstanding boiling wort. My only complaint is that there is no instruction or diagram that comes with the fitting ti explain how it fits together.
Make sure you look at the order and direction of the inner O-rings when you open up this fitting for the first time.