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Thread: Seiko 7c43 crystal source

  1. #1

    Seiko 7c43 crystal source

    Does anyone know of a source for a crystal to fit a seiko 7c43-7010?

    Mineral or sapphire?

    Cheers

  2. #2
    Master mrwozza70's Avatar
    Join Date
    Jul 2013
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    Essex, London, UK
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    1,725
    I asked around not that long ago... there are some crystals that fit from eBay sellers. But nobody making 'correct' reproductions of the OEM crystal.

    You may find a NOS Seiko part poking out of a rocking-horse pile somewhere in the world if you are very very lucky.

    Sent from my Pixel 2 XL using Tapatalk

  3. #3
    My 6309s should fit, ground bevel, correct angle bevel for 6309.

  4. #4
    Thanks both.

    Based on my limited research I thought the 6309 crystal prevented the crystal retaining from being screwed down correctly

    I had assumed someone was making the correct sapphire but perhaps not

  5. #5
    Acg,

    Can you measure 7c43 bevel angle?

  6. #6
    Embarrassingly I donít have anything to measure an angle with

  7. #7
    Photo with macro setting and upload, MUST BE CRISP.

  8. #8
    Iíll try tomorrow in daylight

  9. #9
    Tablets, smart phones now have protractor apps.
    Last edited by Bry1975; 9th May 2020 at 04:42.

  10. #10
    Master j111dja's Avatar
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    Jan 2004
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    Glasgow, Scotland
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    5,363
    The 6309 crystal doesn't fit the 7C43 as you said Bob due to the different profile to accept the screw down crystal retaining ring.

    I think I have a 7C43 crystal in my parts box. I'll check.
    Last edited by j111dja; 10th May 2020 at 15:40.

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