Yeah, they do not have a fluid inside of them. They seem to get a good recommendation as a high reliability tantalum alternative from NASA:

Source: http://nepp.nasa.gov/files/20389/09_005_GSFC_Williams_Liu%20APC%20Final%20Report.pdf
| Source Forum | SE/30 Capacitor Trouble — #15 |
|---|---|
| Category | Troubleshooting |
| Post Date | Sun, 2 Dec 2012 - 21:41 |
| Original URL | https://68kmla.org/bb/threads/se-30-capacitor-trouble.26685/ |
Yeah, they do not have a fluid inside of them. They seem to get a good recommendation as a high reliability tantalum alternative from NASA:
