as an engineer specialized in very high pressure (for the oil drilling industry) I can summarize here advantage and disadvantage of Viton again Nitril
Viton advantages over nitril:
very resistant to chemicals specially oils
very resistant to high temperature (up to +300°C)
disadvantage over nitril :
less flexible material need more precise grooves
subject to break if not corectly handeled
more porous than Nitril
I do not see a that big advantage of viton against nitril for watches , exposure to very high temperature is a non sense for a watch , and we rarely dip a watch in a corrosive athmosphere !
the fact that nitril is more flexible than viton gives a good advantage concerning the necessary torque to wind th watch (manufacturers who use viton are obliged to grease thoses)
so let us say that it is a plus "on paper" but not a real advantage ... a little bit like the helium escape valve on divers
cheers
JM "
Anyone think differently?
Jensen has problems
in General Discussion
Posted
Well they were pretty much out in the open about it , surprised it took Rolex so long.