Omega Constellation Manhattan 398.0866 Crystal and Gasket

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d13_slh

·Jul 14, 2026

Hello,

The crystal on my Omega Constellation Manhattan Ref 198.0140 / 398.0866 (bi-tone) has cracked.
I found a replacement that is for 396.1070 which seems exactly the same part (G70160).
I’ve measured my crystal with the calliper (as it sits slightly proud above the case) and it’s exactly 31.5mm.

Would someone be able to confirm this is indeed a good replacement?
One other thing - will it require a gasket change? If yes, would someone be able to help with the part number for this?

I really appreciate your help.
Thank you

 

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d13_slh

·Jul 15, 2026

Anyone that can help? I’d really appreciate it. Thank you

 

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d13_slh

·Jul 16, 2026

@Archer, I hope it’s ok to tag you directly, would you happen to know about this?
I’ve noticed you’ve very kindly helped other members identify parts of their watches.
I’d be grateful for a bit of help, thank you 😀

 

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ErichKeane

·Jul 16, 2026

According to boley for your reference, the glass is:
Part#: 062SN0556/02
Item#: 9651SN05561

Emmy lists it too: https://www.emmywatch.com/db/part/crystal_special_order--062_sn_0556_02/
Cousins has a PDF with the same number in it for your 2nd ref: https://www.cousinsuk.com/PDF/categories/6532_Omega 398.0866 ST Case.pdf


In THIS thread, @Archer responded with the same answer for a 198.0136 I think? https://omegaforums.net/threads/ome...al-1422-glass-replacement.184966/post-2501252

Searching further, finding the right one might be pretty difficult.

That said, the reference YOU posted in the cousins link, TM Watch has one for sale here, but it doesn't look like Cousin's photo:
https://www.ebay.com/itm/265609833550

You might see if he's willing to help: https://tmwatchco.com/

 

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Archer

·Jul 16, 2026

For the crystal itself, the Omega part number for your watch is 062SN0556. The crystal is 31.5 mm diameter by 0.8 mm thick.

 

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d13_slh

·Jul 16, 2026

Hello,

Firstly, thank you so much @ErichKeane and @Archer for replying. I am really grateful for your effort.

I’m a bit confused about the actual part, as my watch has a crystal that has a bezel printed on it (crystal with embedded bezel) exactly like the one I’ve attached in my first post, while the one mentioned (062SN0556) is a bare crystal that seems to be on Constellation Manhattans that have the metallic bezel.

What I am getting wrong here?
I read the other post mentioning two crystals but couldn’t understand exactly how that actually works on this particular watch.

Thank you

 

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d13_slh

·Jul 16, 2026

For further reference, this is the same type of crystal (plus metal on the back) but in 25mm (the smaller version of the same watch):

 

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Archer

·Jul 16, 2026

Looking at the Omega Extranet, when I look at the bill of materials for the case number you have given, it gives 2 different configurations. One with the metal bezel, and the other with the bezel printed on the crystal. I've never seen them do that before, so initially it was a bit confusing.

So the number I gave above is for the metal bezel version - sorry my mistake.

The crystal with the printing is 062SZ0556002.

 

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d13_slh

·Jul 17, 2026

Archer

Looking at the Omega Extranet, when I look at the bill of materials for the case number you have given, it gives 2 different configurations. One with the metal bezel, and the other with the bezel printed on the crystal. I've never seen them do that before, so initially it was a bit confusing.

So the number I gave above is for the metal bezel version - sorry my mistake.

The crystal with the printing is 062SZ0556002.

Thanks! Does it show whether this configuration also comes with a gasket that will have to be changed with the crystal?

 

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Archer

·Jul 17, 2026

d13_slh

Thanks! Does it show whether this configuration also comes with a gasket that will have to be changed with the crystal?

From hat I can see it appears there is just and O-ring that goes under the crystal - 088NS0804

 

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d13_slh

·Jul 19, 2026

Thank you so much, all the best.