[Sneap] gold O-rings

[David C Ingram]

Fred
The last place I ordered gold gaskets from was Vacumed, Ventura CA, 
1-800-235-3333 several years ago.
You can make them yourself but for UHV applications you need to fuse the 
gold wire and then anneal it carefully.
For stepped flanges getting the size right is critical and you need to make 
the gasket slightly smaller than required and then stretch it very gently 
into place.
For flanges with no step for the gasket, i.e. those with a large smooth 
flat surface, I have used pure aluminum wire (annealed) and just carefully 
laid the ends over each other. When the gasket crushes the wire, the wire 
welds to itself forming a seal at the join, hopefully.
Good luck.
David




At 11:59 AM 12/15/2006, you wrote:
>The SNEAP 2005 Meeting was held at Brookhaven National Laboratory.  Please 
>visit the meeting Homepage at: https://www.bnl.gov/sneap2005/default.asp
>
>The ATF-SNEAP 2006 web site is now available:
>http://www.ansto.gov.au/nugeo/conference/private/ATF_SNEAP.htm
>
>++++++++++++++++++++++++++++++++++++
>
>Greetings,
>
>Does anyone know how to make a gold O-ring?  Does the gold wire have to be 
>fused together using a torch, or can it be soldered?
>
>Any assistance would be appreciated.
>
>Thanks,
>
>Fred Bateman
>
>Dr. Fred B. Bateman
>NIST Radiation Interactions and Dosimetry
>100 Bureau Dr. Stop 8460
>Gaithersburg, MD  20899
>ph: 301-975-5580
>fax: 301-869-7682
>
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David C. Ingram (ingram at ohio.edu) http://inpp.ohiou.edu/~ingram
Edwards Accelerator Laboratory  Room 106
Department of Physics and Astronomy
University Terrace
Ohio University
Athens, Ohio 45701-2979


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