Summary

This is a cover for a charger inlet on an electric vehicle.

Instructions

Print it out.
I had intended to use o-rings to supply some sealing and friction but I didn't have any appropriately sized ones so I used some Sugru.
I spread it around on the inside (where the o-ring grooves are).
It didn't have to be very thick.
You could also modify the scad file to get it to work with o-rings if you have the right size.
There is a 4mm hole in the STL for a bolt to attach a tether.
You can disable it in the openscad if necessary.

Electric Vehicle j1772 Inlet Cover