Apply a Layer of Vaseline to the Glue Caps to Keep Them From Sticking
If you have any strong glue, you can replace the cap with it tightly because you didn’t bother cleaning the nozzle the last time you used it. Rockler reminds us that a small amount of Vaseline can fix this problem.
Just dab a small amount of Vaseline on any glue nozzle before putting on the cap and this should prevent the cap from sticking over time. Make suggests this should work with any adhesives that containcyanoacrylate (like Super Glue), as well as things like Shoe Goo.
How to clean a Vaseline-coated CA glue bottle nozzle “wiki useful Rocker through the brand