Yet another sealant cap
thingiverse
I based this design on another concept that incorporates an o-ring, but tailored it to the available o-ring and my personal preferences. The threads are intentionally a bit loose to accommodate debris over time. A .stp file is available for modification purposes. I sourced the o-rings from AliExpress. The specific product can be found here: https://www.aliexpress.com/item/NBR-O-ring-CS-3-1mm-x-OD-21-22-23-24-25-26-27-28/32731899167.html The dimensions are 18x25x3.1 (ID x OD x thickness).
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