"Morgans" wrote in message
...

"Rob Turk" wrote

That would get me back to the starting situation; What do I use to seal
the bushing, considering nothing seems to stick to polyethylene..

I think part of the problem here, is that everyone does not know exactly
what you are working with, such as:

Is the location of the fitting in the tank built up at all, or is it like
someone just punched a hole in the tank in a random location, and stuck
the fitting in?

Can you give us a part number, or picture on a site, or at least a
description of the type of fitting that is penetrating the tank that you
are presently using, that is not working?
--
Jim in NC


Here's a link to a Kitfox builders site. It's not my site, but it has good
pictures of the exact same header tank itself:
http://www.scoobysworkshop.com/2005p...tors_small.jpg
http://www.scoobysworkshop.com/2005p...Done_small.jpg

There's no real build up, but the tank has thick enough walls to allow a bit
of thread. There's no openings to allow nuts to go in, meaning that viton
ring approach is practically rules out. The guy that made the pictures has
used some kind of kit or glue to bond the brass inserts into the tank, and
it's this kit that eventually gives way and develops leaks. We got the tank
from a previous owner who was honest enough to tell us about the problem
beforehand and we're trying to solve this in a reliable way.

Rob


Rob