Summary

I saw someone requested this on Facebook, sorry I can't remember who it was, hope they find this.

It's simple TPU bung that covers the micro-USB socket on your flight controller (or whatever device you have with a micro-USB on its board), uses the same principal as the bung I created to cover the upgrade socket on a HDZero VTX - https://www.thingiverse.com/thing:4777653

Print in TPU, 0.2mm layer height, no support, 5 perimeters minimum. Make sure your Z height is well tuned, elephants foot doesn't help this print at all.

I purposely made it a little short to make it grip the socket, so first time installation can be tricky - insert the bung into the front of the socket (make sure it's the right way up), then stretch the band over the back of the socket, make sure it fits snug and leave it there because the TPU will then settle into shape over the socket, making subsequent removals/installs much easier.

Direct download from my website:
http://www.haku.co.uk/3D/Micro_USB_socket_TPU_bung.stl

Version for USB-C socket - https://www.thingiverse.com/thing:5269245

You can sell prints of this, but don't overcharge, and link back here.
Tips are most welcome https://www.paypal.com/paypalme/Haku3D and will encourage me to make more designs for everyone to benefit.

Most FPV people may know me as licensetodrive on YouTube https://www.youtube.com/user/licensetodrive