I don't think you can get those in the States. However, Rob in NL may be able to sell you these parts. By the way, I'm just down the street from you in the People's Republik of Kambridge.Hey folks anyone know of a resource in NAmerica for crystal and crown gaskets for a current Marinemaster? Can't seem to get one from coserve
Same design, but different size AFAIK.Isn't the crown gasket the same as an SKX007?
I don't know for sure - but Boley definitely lists it as using the same one http://boley.de/referenz/seiko/35319?search=8l35-0010Same design, but different size AFAIK.
To the OP: I bought a spare crown/stem for my 7S26-0020 (SKX007), and it came with a gasket. I suspect the MM crown/stem assembly will ship with a gasket, too. Might be a good idea to order a crown/stem assembly while they're still available.