Seamaster Cosmic replacement crystal

sph68 · Nov 15, 2015

Hi

I'm looking for a replacement crystal for my 1970 Seamaster Cosmic case reference 166.026. Does anyone know what size I need and where I can buy a replacement.

Thanks Stephen

Canuck · Nov 15, 2015

With the case model number, pretty well any watch material supply would know what you need. Do you have an inserter? If there is a crystal in the watch, are you able to remove it?

sph68 · Nov 16, 2015

Hi

Thanks. I do have the tools to remove and insert the crystal though I've read some articles that suggest using the crystal lift tool for insertion and some suggest using a press so not quite sure which is the safest way to go.

Archer · Nov 16, 2015

You don't say what case material you have...people always leave this out...

Assuming it's steel, the crystal is part #063PZ5123 - GLASS PLEXI ST RING D32.94 H4.9.

I would highly recommend getting a genuine Omega crystal, as the tension ring is typically stepped on Omega crystals and not having that can cause you problems.

As for an "inserter" this is a tension ring crystal so the proper way to install it is using a press.

Cheers, Al

sph68 · Nov 16, 2015

Hi Al

It is indeed a steel case so I've ordered the crystal you mentioned. Thanks your help is much appreciated.

Cheers Stephen

Seamaster Cosmic replacement crystal

sph68

Canuck

sph68

Archer

sph68

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