When you are working on your SKX, it is good to replace the gaskets and other small parts so you are good for many more years.
The gaskets I have here are orginal ones, from Seiko, sold per one. I lubricate the rubber gaskets before I ship them, with a little silicon grease from Seiko (S-916).
(And yes, the small crown gasket costs the same as the much larger case back gasket… sorry!)
