This is a 22mm diameter x 1mm thick round seal I quickly created for use in salt and pepper shakers being prepared for use in a museum display.

The shakers are glass salt and pepper shakers ordered from amazon (https://www.amazon.com/dp/B009LR3TYW), and are filled with either white or black sand to fill in for salt and pepper.  These seals are intended to keep the sand inside the shaker but also allow for airflow.  Airflow was a consideration as the shakers are going to be displayed in a dry but not climate controlled space.  The seals were attached to the glass shakers using a thin bead of CA glue.

Print Settings

Print material: PETG

Top Shell Layers: 0

Bottom Shell Layers: 0

Sparse Infill Density: 75%

Sparse Infill Pattern: Cross Hatch