Sunlu Resin Cap

Cap for Sunlu Resin Bottle. Mine broke either due to fall or I screwed it on too tight. Plus I didn't like how hard it was to remove the inner cap while I wore gloves, so made this instead.

One problem I can see, is if the middle part breaks and/or falls into the resin bottle. I'm currently doing a 2mm perimiter in my slicer settings.

I used a #16 O ring I bought from Home Depot, and the clear cap for the top. I printed in PLA, but I don't know how well that material will do long term, or even which material would be best. I would assume ABS with acetone smoothing, but I'm unsure if the resin medium would corrode the ABS. If you do know. Post in the comments.