Any updates on RACS rebuilding early CRTs?

[ChrisW6ATV]

Originally Posted by John Folsom

Whatever material you use to attempt to seal a CRT must have three propoerties:
1. It must survive the 600F oven temperatures during processing
2. It must have a thermal coefficient of expansion which matches very closely the glass/metal of the CRT
3. It must be impervious ie vacuum tight over a very long period of time.

I am curious whether Vac-Seal has been considered, or ruled out already. If it is strictly because of the heat issue, could it not be applied after the CRT has cooled? Specifically, since the weld leaks may have existed since the CRT was manufactured and they did not cause failure for years if not decades the first time, why is there a need for them to be sealed before the rebuild?