The ferrule is the compression ring you slide over the outside of the
tubing. the one for brass has a slightly larger O.D. than the one for
plastic. Often, people use the brass in error, causing a poor seal. It's
been so long since I last did any plastic plumbing; I forgot about the
flanged brass insert you have to use to keep it from collapsing. Duh!
GM
-----Original Message-----
>I put a brass tube (is that the ferrule?) inside the plastic tubing to keep
it
>from collapsing when the compression collar tightens. That appears to have
>sealed the leak. I'll let it sit a day or so and see if the system holds
air
>now. Thanks for the suggestions.
>
>Scott Isensee
>
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