As Scrinja says, Krytox.
Inert so doesn't affect O rings like motor oil and doesn't have issues on any metal to metal situations, in fact its slippy...
No Worries and if I find it I'll photograph the form, its probably in my spares somewhere so will likely turn up when I'm looking for something else...
Yes and it did state what it's for on it, could be possible there was a question of what type of gun it was for that got it rejected for the one that...
A .22 Webley Osprey, which was my very first (brand new) air rifle aged 11, is a gun I would never sell, as it started me off on my lifelong love of...