PETG can be used for a number of different applications. The first that comes to mind is of course the food industry. Due to its relation to PET, PETG is not just water-resistant but allowed to be in contact with food according to the FDA. This makes it suitable especially for packaging in the industry. But that is not all. Moreover, PETG is also suitable as an aligner material as well as for medical equipment and prosthesis thanks to its ability to be sterilized.
As may also be expected, PETG is also widely used for prototyping thanks to its relative cost-effectiveness and adequate properties. Additionally, due to its heat and chemical resistance, it can even be used in more durable applications such as in tooling, testing components or end-use parts for machines.