This is a strainer lid for a mason jar. It does require a ring to secure it to the mason jar. I put some feet it can be set upside down in a sink without creating a seal. It doesn't require anything special to print.
I know there is some debate as to whether or not 3D prints are truly food safe, this link is to a study on the matter. I advise you read it and decide for yourself if you want to use 3D prints around your food.
https://works.bepress.com/MAThomas/1/?fbclid=IwAR02GzMBMj1hRJaZ2dsfOycrx_vWaXBbcI6oDOcay4HFC5QcP2wFJFkmL_I
The author marked this model as their own original creation.