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#1
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The surfaces we're trying to mate really aren't flat to begin with. The ultor flange sticks out from the glass portions at a 90 degree angle. We'd be filling in the cracks that occur near those joints. I doubt very much we'll ever stumble across a perfect material for sealing these tubes, so there is going to be some kludging in any case. The properties of the Epotek still look a bit more promising to me, except for the rather low temperature it can tolerate without breakdown.
Last edited by benman94; 05-31-2018 at 09:05 AM. |
#2
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Quote:
The advantage of the 353ND from Epotech, is that it not only has a very high affinity to mating with metal and glass but it can be applied as an external coating. Although the 353ND has the disadvantage of not being able to withstand a 650F evacuation oven, it is possible to evacuate a crt at temperatures that the 353ND can tollerate, you just have to pump for a lot longer time. Of course this has not been proven because so far we have not had the opportunity to try a low temperature pump down in practice with 353ND sealing a 15G. Sure would be nice if someone with an oven could give this theory a try before I die.
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#3
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You don't have to test it on a 15GP22. Any old tube will do
for a first test. IF it fails on that tube, it fails. If it passes well, then test further. |
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