TC wrote:
The panel sealant streamlines the panels, and prevents the radar emissions from locking onto a gap in the panels.
Yes, the sealant does have to be periodically reapplied, following maitenance. No biggie. It's somewhat like caulking your house from what I understand.
Here's a really interesting close-up where you can clearly see that certain panels (ladder) have unfilled gaps and others are filled.