Fleshlight case
thingiverse
A replacement case for fleshlights is readily available. Use a 61.5mm inside diameter, 5.5mm high by 5mm wide cross-section rubber seal on the bottom. A suitable fit can likely be found on McMasterCarr if access is granted, or print the 'cap no seal' version of the end-cap, which does not require a rubber seal.
Download Model from thingiverse
With this file you will be able to print Fleshlight case with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Fleshlight case.