power cable grommet passthru hole plug passage TPU

in the winter or better christmas time we are installing different stuff as decoration.
sometimes we need some power cable to go from the inside of the house to the outside.
in the basement i installed some window made of acrylic glass and put a hole into it (for the power cable).

on low temperatures it could become a little bit windy thru this small hole, so i first bought some cheap rubber grommet, put a hole into it and installed it.
but after a short time this grommet gets damaged. 

so i designed a simple grommet or plug to seal it on my self and printed it in TPU with a shore hardness of 90A.
i created two designs, one with a hole for the power cable (and a small slot / gap to install the cable) and one without any hole, to switch it after the cable is not needed anymore.

the grommet fits any hole with a diameter of 50mm and in any material with a thickness of 4mm.
for the power cables i put a hole with a diameter of 8.5mm into it.
to install them i put 3 bigger lugs or brackets on the backside, so at least for me they smothly slip into my window (higher shore hardnesses could become tricky when installing the grommets).

the black grommet is the bought one, the white ones are my design.

I printed the grommets on my Bambu Lab P1S with the following settings:

Material: TPU from Bambu Lab in White (90A)
Nozzle-Temp: 225°C
Bed-Temp: 35°C (Bambu Lab Textured PEI)
Support: Yes (tree)
Nozzle: 0,4mm
Layer Height: 0,2mm
Infill: 15% (aligned rectilinear)
Wall Loops: 2
Wall Generator: Standard
Bottom and Top Shell Layers: 4
Initial Layer Speed: 50mm/s
Outer Wall Speed: 100mm/s
Inner Wall Speed: 150mm/s
Infill Speed: 150mm/s
Travel Speed: 500mm/s
Fan Speed: 30%
Brim: No

Feel free to scale it when you need other diameters or thicknesses.