Jump to content

Seiko 7S26 glass measurement


Recommended Posts

Hello!

I have to find a glass for a Seiko but I don't have the old model, it has been delivered to me with no glass.

How do I should mesure the diameter and height?

I have the old gasket on place, should I mesure with the gasket on or without it?

Thanks for your precious answer.

 

IMG_4414 - copie.jpg

Edited by Nednico
image
Link to comment
Share on other sites

12 minutes ago, Nednico said:

Oh thanks, very useful! Sorry to abuse but If I want to order from, for example, cousinsuk.com, with is the best around here, how can I find the exact size and shape the I need?

Not sure who has one to be honest. You can call GS directly and they may be able to help you. I contacted them about my Sicura Satellite. They did't have that info on file, but they may with a Seiko branded watch, especially if you have the manufacturers part number. Their customer service was excellent. They won't sell to you, but they can get you a part number and you can go from there. Their phone number is at the top right on the first page.

https://gssupplies.com/crystal-catalogs/?gclid=CjwKCAjw-YT1BRAFEiwAd2WRtqEhwu6RTe6_xsg8ltSEsNJS-eP5As8CQr_HONnDtW3aufNej2cMJBoCnxMQAvD_BwE

  • Like 1
Link to comment
Share on other sites

1 hour ago, Nednico said:

Oh thanks, very useful! Sorry to abuse but If I want to order from, for example, cousinsuk.com, with is the best around here, how can I find the exact size and shape the I need?

It's a flat mineral crystal, 1.5mm thick. Size is measured with vernier calipers with gasket in. Link given above tells Ø 30.5mm.

Link to comment
Share on other sites



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Hello everyone, for what it's worth, here is my approach: 1. Escape wheel submerged in Epilame, then dried quickly with a hairdryer. Then the final tip of the pivots are cleaned by poking into pithwood. The logic being that the Epilame is removed at the intended contact point (to avoid any residue that may mix with the oil), but remains in the areas where oil is not supposed to spread to (further down the pivot towards the wheel). The escape wheel teeth also benefit from having Epilame to keep the 9415 in place.  2. I use a syringe to treat only the pallet stones. I suspend the pallet fork with some Rodico so that the stones hang downwards. I notably use a rather thick needle where a drop WON'T form, but rather where the Epilame liquid stays in the needle tip, which I then dip into the pallet stones. It requires some practice to get the right amount of Epilame into the needle tip, but it works for me now. This way, no drop will "jump" onto the pallet fork and potentially go all the way to the pivots.  3. I let the movement run for a few minutes without lubricating the pallet stones... to scrape off the Epilame in the intended contact "channel". Then I remove the balance again and lubricate the exit pallet stone with 3-4 successive drops. See the "channel" that forms on the pallet stone in the picture -- not so easy to see, but it's visible.   I am conflicted about the use of Epliame in balance jewel settings. My impression is that the two jewels sufficiently suspend the oil (even 9010). Apparently Rolex recommends NOT to use Epliame there (heard from a former Rolex service center watchmaker), as it could cause additional wear. Apart from that, I follow specific instructions where I can find them. E.g. the infamous Rolex reverser wheels or sometimes (parts of) the seconds wheel. Exception: I'm currently servicing an Eta 2824 and will probably ignore the service sheet that recommends treating the whole keyless works with Epilame and then using HP1300... I'll skip the Epilame and use 9504 grease.        
    • I'm going to give this a try today/tomorrow on my UTC33/Seiko 66, thanks!
    • Hello and welcome from Leeds, England. 
    • Don't forget Mark is a hard working watch maker so he is also tied up with work. I'm sure he is keeping his eye on this forum making sure it is running along nicely. 
    • Thank you for your introduction and welcome to this friendly forum. We all look forward to your contributions and continued involvement.    
×
×
  • Create New...