For anyone that needs a unique extension port for the GDome XL (https://getgdome.com/products/xl-surf-v2-housing-bundle-universal-underwater-mirrorless-and-dslr-camera-housing), we have this one just for you.
We do not use or sell 3d printed parts and have not tested this product in water.
This could require epoxy treatment or printing with a SLS printer to make it waterproofing.
It is entirely at your own risk if you would like to use print and use this part in and around water.
These extension ports for the GDome XL requires 2 x thick body (housing) seals.