On Fri, 19 Nov 2010 15:49:57 -0500, wrote:

"boiler sealer" used to be a common product used for that kind of
repair. "irontitie" was a common brand and is still available -. Just
checked my bottle - it says "Irontite products of Canada Ltd, 295
Norfinch Drive, Downsview Ontario."

THANKS for the tip. I wasn't going to try automotive stop leak, but I
will try this. But I'll check with an HVAC and plumber type first.

Karl