This is a replacement cap for a 3.7oz/109ml tube of E6000 adhesive.

I recommend printing in TPU for a good seal. I originally printed this in ABS, and it eventually became brittle and cracked (perhaps from the solvent in the glue?).

The stock cap becomes very difficult to use after the the inside gets a bit “glue-ey”, and becomes nearly impossible to remove. This version has a couple of lugs to make it easier to twist.

There's another E6000 cap on Printables & Thingiverse, but it is for a smaller size tube, and is not threaded.