I need a gasket in a large syringe like container, designed to create a watertight seal against a large glass tube, in a file format suitable for 3d printing (e.g. stl, or stp format), to be made in an elastic material.
it's basic reponsibilities:
seal (like a syringe) fluid in.
seal air/water out.
should still work with a container with slight variences in the dimensions (glass diameter might be 1/16th inch smaller at the bottom of a beaker than at top)
have a glass circular insert
have a valve to let out air escaping as the plunger is pressed.
it should model either
1) existing syringes with 3 rings that are used for dimensional stability and sealing. Like so:
2) or the aeropress single flange