"Charles A. Sherwood" wrote: (Clip)Silver solder might work but I'm not
particularly good at it and I am very concerned that the heat will tarnish
the SS and I will not be able to polish it after its assemebled.
^^^^^^^^^^^^^^^^^
Before you go to all the trouble of machining all those O-ring fittings, why
don't you talk to someone in a plating shop? They may have a way to clean
off the silver solder discoloration--possibly chrome, silver or nickel
plating as the final step.