clark glass in wm9 v1 can protrude as in the gen?

[chronobam]

i have a sub WM9 v1 with gen bezel and clark but the glass is very flat respect the gen.. you can do this protrude as in the gen?and how? thanks

[Whatever123]

I guess it depends on the gasket used - there are different gasket heights available for Clark's crystals, can't remember which one was correct for the sub though.

[chefcook]

You need a C2 gasket. The WM9 V1 or TW Subs come with a C1 which is too flat for Submariners.

[chronobam]

thanks so much!

now i check...can i know what is the difference between the two oring? c1/c2?