Subminimal NanoFoamer Pro Protective Bottom Cap

Printed Bambu Lab 95A HF TPU:

0.2 mm layer height
2 wall loops
15% infill (gyroid)

From my printer the bottom cap fits just tight enough, and the sides are high enough so it says on and seals against water getting under the NanoFoamer Pro.

Edit:

v2 files add a small hole in the bottom to ease installation and removal.