Rick - Look at 3M Scotch-Weld Epoxy Potting Compound DP270. https://www.3m.com/3M/en_US/p/d/b40066438/ I purchase from McMaster-Carr (Midwest pickup window is 2 miles from house).
This is what I have used, since it is rated for -65° to 350° F and safe with copper (potting electronics, transformers, etc.) *** Date: Wed, 10 Nov 2021 14:40:53 -0800 From: "Richard (Rick) Karlquist" <rich...@karlquist.com> Subject: [time-nuts] Potting compound advice needed To: time and frequency measurement <time-nuts@lists.febo.com>T I am looking for help choosing a potting compound that has the following properties: 1. Good for 5,000VAC @ 1 MHz 2. Low RF losses. 3. Low permittivity is preferred 4. Low tempco of permittivity is a want. 5. Something I can implement in my home shop without access to a vacuum pump etc. is a want. Thanks in advance Rick Karlquist N6RK _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.