Not OP, but I do have a little info on lubing BOX tactiles - and I’m also completely shameless about necroing a post if it means someone finds the info they were looking for. This might not be said information, but hopefully it will be helpful to someone:
I thought if I put some 205g0 on the plastic cam / pusher thing between the contacts and the stem that it would silence the occasional click sound that gets less occasional over time… what it actually did was make the sound happen all the time while also making the switch nice and smooth.
It’s nowhere near as loud as any purpose-made clicky switch, but it clicks. The good part is that while it’s a click, it’s not a rattle - just one, clean, crisp sound for each time the stem brushes that cam. So - while lubing those parts doesn’t silence them, it does make them more consistent in a couple of ways - so do with that what you will.