PLEASE be careful messing with the cylinders in office chairs though. It doesnt sound like youre planning to, but just a blanket warning. Much like garage door springs, those cylinders store WAY more energy than you would believe, and fucking up trying to take apart a damaged cylinder can send the piston an impressive distance through your chest.

In fact, if you look at the bottom of your chair where it sits on top of the piston, there should be a solid metal plate just above that. That metal plate is specifically placed there to avoid any surprise butt-stuff from a piston failing and rocketing up through the seat cushion. Because if that plate isn’t there, you will end up with a piston lodged three inches into your ass/taint area.