crystal size?

[stallonepanerai]

are all crystals for a 44mm luminor case the same size? I think I have a sead case and need a crystal for it. I was just gonna order a sapphire crystal with no ar from jacksontse. I just want to make sure it will fit my case...

[Drulee]

The only problem with JTse sapphire crystals is their thickness. His are much thinner than standard crystals, less than half the thickness of a gen, I believe. So depending upon your case's bezel height, the top of the crystal may end up below the top of the bezel - giving it a sunken look.

[w0lf]

I'm not familiar with standard crystals but older cartel manual winds and DSN manual winds have the crystal dimensions pretty much spot on to gen Panerai one.

The dimensions are:

35.5+/-0.05mm diameter and 3.5+/-0.04mm thickness measured in the center.

JT's crystals are also 35.5mm diameter but they're 3.06mm thick. Thickness of the crystal is only half the trouble. There is a noticeable difference in crystal clarity and refraction between all rep crystals I've seen and a gen crystal. I've heard good things about a certain eBay seller's crystals but I've not seen anyone post comparisons.

[stallonepanerai]

Are DSN's crystals 35.5mm wide and thicker than JT's 3.06? Who else is there to buy a crystal from?

[babola]

Yup, DSNs are good to go. Not cheap but closer to gen's and better than Jackson's/Getat's. The latter are slightly mistier than cartel/DSN sapphire, and I agree with w0lf on that point.

BTW, xtal position in reference to the top of the bezel is achieved with xtal press during the install. I prefer the one with screw top (I sold my traditional lever xtal press as soon as I bought this one) which adds much better glass height control during the install.

[Drulee]

BTW, xtal position in reference to the top of the bezel is achieved with xtal press during the install. I prefer the one with screw top (I sold my traditional lever xtal press as soon as I bought this one) which adds much better glass height control during the install.

So xtals shouldn't just be pressed as far as they can go into the gasket?

[babola]

So xtals shouldn't just be pressed as far as they can go into the gasket?

Not necessarily, however there's always a 'good' measure ;-)

I've 'fixed' couple of crystals on my Pam reps, where the crystal was originally mounted flush with the bezel edge. Removed them and re-installed again, this time with beveled xtal edge a hair above the bezel line.

cheers,

b

[kbiz]

The only problem with JTse sapphire crystals is their thickness. His are much thinner than standard crystals, less than half the thickness of a gen, I believe. So depending upon your case's bezel height, the top of the crystal may end up below the top of the bezel - giving it a sunken look.

Really? How much thinner are they? Actually, do you know how thick they are??

[w0lf]

K, 3.06mm +/- .04-0.5mm

[stallonepanerai]

i just bought a jackson crystal. I will post how it works out when i get it. DSN's crystal was double the price.

[cavi]

I have a rep Panerai Luminor GMT 44mm case crystal seems tobe 37.5mm wideat bezel   where can I get a replacement?