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<DIV><SPAN class=588415619-01062009><FONT face=Arial size=2>Does anyone know of
any difficulties with using ground joint end caps on quartz tubes that have a
side port for venting gases? The tubes will run up to 1150C. How much is
differential thermal expansion a problem resulting in the end caps getting
stuck?</FONT></SPAN></DIV>
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<DIV align=left><FONT face=Arial size=2>Conrad Silvestre<BR>Department of
Electrical Engineering<BR>C402 EQuad, CN-5263<BR>Princeton
University<BR>Princeton, New Jersey 08544-5263<BR>Office: 609-258-6236<BR>Lab:
609-258-6234<BR>FAX: 609-258-1840</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Business Cell:
609-356-8825<BR></DIV></FONT>
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