SLA021J1 o rings

[poppydog]

I vaguely recall reading somewhere about the reason/s why Seiko doesn't use or need more than one o-ring in the crown assembly, but now can't find where I read it. Can anyone shed any light on this? I'm thinking how with the monobloc case and no HEV, and yet capable of sat' diving, the need for more than one seal must be superfluous?

Just wondering, got more reading time than usual at the moment, and plus, found a super deal on the SLA035!

[toxicavenger]

this one? https://www.thewatchsite.com/threads/wa ... own.57122/

[poppydog]

this one? https://www.thewatchsite.com/threads/wa ... own.57122/

Hi Terry

Thank you, I don't think it was this, but it helps and is interesting, and makes a lot of sense

Cheers mate