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#1
10-15-2009, 09:33 PM
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Eric,
I think you are right, the complex joint was made to allow for thermal expansion. Too bad they did not have frit glass. I suspect most of the leaks we are looking for are microscopic in dimension, and would not produce any bubbles. The corrugated washer isnot aattached, it is simply pinched between the 2 flat faces. Here is another photo highlighting the washer
__________________
John Folsom 
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