UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Best oil-proof sealant?

Argus25 · 7th Nov 2017, 3:08 pm

I have used non acid cure silicone rubber for EHT applications, its cheap. For it to work everything has to be clean & oil free initially. It does successfully seal against oil, I used it on my own oil filled EHT probe.

Another sealant and glue I used on it was Torr Seal by Varian Vacuum, which is a white high vacuum sealant two part epoxy resin, but its diabolically expensive. Though I managed to use it to successfully seal a crack in a CRT.

I have used Hylomar blue when I rebuilt a Borg-Warner 35 transmission in my 1963 Humber Scepter when I was about 17. I have not tried it for high voltage applications.

7th Nov 2017, 3:08 pm	#15
Argus25 No Longer a Member Join Date: Oct 2016 Location: Maroochydore, Queensland, Australia. Posts: 2,679	Re: Best oil-proof sealant? I have used non acid cure silicone rubber for EHT applications, its cheap. For it to work everything has to be clean & oil free initially. It does successfully seal against oil, I used it on my own oil filled EHT probe. Another sealant and glue I used on it was Torr Seal by Varian Vacuum, which is a white high vacuum sealant two part epoxy resin, but its diabolically expensive. Though I managed to use it to successfully seal a crack in a CRT. I have used Hylomar blue when I rebuilt a Borg-Warner 35 transmission in my 1963 Humber Scepter when I was about 17. I have not tried it for high voltage applications.