Seiko & Citizen Watch Forum Message Archive

I do know & remember from my chemistry & Biology classes that the term "Permeable" means to: Allow fluids or gases to pass or diffuse through a substance or membrane either fully Permeable or semi!

Im not sure if this is how the gasket/ring system works or not to be honest, but I wouldnt think so as that permeablity would make he intrusion as easy as exit!

..from all I have read and heard of this L-flanged gasket system employed & developed by Seiko

watch company, that the gas passes under and around the gasket and ring and pushes up around the edges of the crystal surfaces.

If it were based purely on Permability, there would have been no need or reason for the development of the gasket in study and the gas would just make its way out by the easiest means...Thus this could not be plausible, as the watch would not be sealed to the fullest potential IMO.

The truth is helium is a gas that rises, helium will not escape out of the body or enclosed watch case that easy without help at depth...the gas has an expanding property that when below sea-level has a constant pressure at a specific gravity & depth, and when approaching sea-level I think the gas expands which increses its ability to rise.

The problem with watches is that the he gas usually rises to the upper level of the watch case, which as we know would be the crystal area, and crystal have cracked and broke due to this build-up in he gas molecules, and thus must be released either manually (Valve) or automatically (L-gasket).

This is where the L-flanged crystal gasket comes into play & employs its design charactoristics and allows the gas to pass under the flange and up and around the upper gasket area into and around the retaining ring and out of the watch...

Well, this is what I see and the way I understand it to work & I may have missed something here, but I thimk Im with-in the specs of the operation of this system.

Maybe Randal Benson or Larry Bigg's would be able to clarify this feature, but this is all I know and can explain about how it works IMO.

Thanks,

Jimmy

This message has been edited by Poseidon-Jim from IP address 172.133.216.202 on Nov 24, 2007 1:50 PM