On Saturday, February 8, 2020 at 6:58:54 PM UTC-5, pH wrote:


It was some sort of blue gunk in a small 'vaseline' style container that had an ammonia
odor to it and dried to a powdery solid. I forget what it's called w/o going out to my garage.


Likely a thread-locking compound, loctite 242 or something similar. SOP for production mechanical assembly where the part may need to be disassembled.

https://tdsna.henkel.com/americas/na/adhesives/hnauttds.nsf/web/4F5DE4CF912A71D7882571870000D60D/$File/242-EN.pdf