CT231 Polished scaled
CT705 Full Polish 3
CT231 1
CT231 2
CT231 3

SKX Caseback With Spacer for NH Movements – CT231 Polished

$18.00

In stock

  • Material – 316L Surgical stainless steel
  • Type/Design – Sterile case back no identification 500M rated – High polish finish – Integral spacer built in to allow fitment of movements with the thinner grey movement spacer e.g. NH35/36
  • Important – This case back cannot be used with the thicker black movement spacer – our CT200 is the case back for that purpose
  • Finish – High Polish
  • SUPPLIED WITH NEW CASE BACK GASKET
  • Additional info – 500M rated Sterile case back ideal for personalization custom laser etching. Supplied with new gasket/seal.

Suitable for:

  • Seiko divers 200M 0020 case type SKX007 SKX009 SKX011 SKX171 SKX173 SKX175 SKXA35 SKX401K
  • New SRPD Collection
  • 5 Sports collection – SRPD55K3, SRPD57K1, SRPD59K1, SRPD55K1, SRPD55K3, SRPD57K1, SRPD59K1, SRPD61K1, SRPD63K1, SRPD65K1, and SRPD65K4
  • 5 Suits collection – SRPD65K2, SRPD67K1, SRPD69K1, SRPD71K1, SRPD71K2, SRPD73K1, SRPD73K2, and SRPD75K1
  • 5 Specialists collection – SRPD55K2, SRPD65K3, and SRPD76K1
  • 5 Street collection – SRPD79K1, SRPD81K1, and SRPD83K1
  • 5 Sense collection – SRPD77K and SRPD85K1
  • Mid-Size 200M – SKX013 SKX015
  • SRP Turtle: SRP775 SRP777 SRP779 SRPA21 SRPC44 SRPC95
  • Samurai: SRPB09 SRPB49 SRPB51 SRPB53 SRPB55 SRPB99 SRPC93 SRPD03
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77 reviews for SKX Caseback With Spacer for NH Movements – CT231 Polished

  1. Robert O. (verified owner) –

    Verified reviewVerified review - view originalExternal link

    Great case back if you’re using the ct500 so you don’t have to change the grey support ring. Still in the works

    • admin (store manager) –

      Thank you, Robert, for your review of the CT231 Caseback!

  2. Sergio B. (verified owner) –

    Verified reviewVerified review - view originalExternal link

    The threading on this case back works like a charm and much better than the original Seiko case.

  3. Paul N. (verified owner) –

    Verified reviewVerified review - view originalExternal link

    It is thicker then what I was expecting I thought I ordered the regular 200m case back lol but finish and machining is amazing and the time it took to get it in so happy i love this hobby and that I dont have to wait weeks at a time to get my parts I.

    • admin (store manager) –

      Thank you, Paul, for your review of the CT231 Case back!

  4. Clayton Robinson (verified owner) –

    Verified reviewVerified review - view originalExternal link

    • admin (store manager) –

      Thank you, Clayton, for your review of the CT231 Case back!

  5. John D. (verified owner) –

    Verified reviewVerified review - view originalExternal link

    Perfect fit with NH35 movement. Love ’em!

    • admin (store manager) –

      Thank you, John, for your review of the CT231 Case back!

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