Spare Caseback for Oak 37mm Seiko Mod

Name: Spare Caseback – Oak 37mm
Brand: Nomods
SKU: RO37-CB-RSG
Price: 27.95 EUR
Availability: InStock
Rating: 4.89 (80 reviews)

Nomods Silver Oak 37mm Seiko Mod Spare Caseback

Nomods Gold Oak 37mm Seiko Mod Spare Caseback

Nomods Gun metal Oak 37mm Seiko Mod Spare Caseback

Nomods Black PVD Oak 37mm Seiko Mod Spare Caseback

Nomods Rose gold Oak 37mm Seiko Mod Spare Caseback

Swap finishes or recover a build — PVD-matched, gasket included to keep your 100 m rating.

37mm case
10 ATM

€27,95

Color — Rose gold

Only 4 left in Rose gold · Ready to ship
Backordered, shipping soon

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Replacement caseback for the Oak 37mm V2 Ultrathin Seiko mod case. Available in rose gold, gold, gunmetal, and black PVD finishes to match your case color. Each caseback is machined from 316L stainless steel with the same PVD coating as the original. Includes a fresh caseback gasket to maintain the case’s 100 m water resistance rating after installation.

Specifications

Specification	Value
Compatible Case	Oak 37mm V2 Ultrathin
Material	316L Stainless Steel
Finish Options	Rose gold PVD, Gold PVD, Gunmetal, Black PVD
Type	Solid caseback (screw-down)
Water Resistance	Maintains 100 m when gasket is seated correctly

Compatibility

This caseback fits the Oak 37mm V2 Ultrathin case only. It is not compatible with the Oak 41mm case, the Seikonaut case, or other Seiko mod case platforms. Select the finish that matches your case: rose gold, gold, gunmetal, or black PVD.

What’s Included

Solid caseback (316L stainless steel, PVD finish per variant)
Caseback gasket

Caseback opener tool is not included.

Frequently Asked Questions

What cases does this caseback fit?

This caseback is designed exclusively for the Oak 37mm V2 Ultrathin case. It will not fit the Oak 41mm case, Seikonaut case, Petrichor case, or any other Seiko mod case.

Does it come with a gasket?

Yes. A fresh caseback gasket is included. Always replace the gasket when swapping casebacks to maintain the 100 m water resistance rating. Seat the gasket evenly before screwing the caseback into place.

Browse all Oak 37mm cases · Recommended with 37mm Oak · Oak parts · All cases

Nomods is an independent brand. Our products are original designs inspired by iconic watch aesthetics. We are not affiliated with or endorsed by any luxury watch manufacturer. All brand names are used for reference purposes only.

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Spare Caseback – Oak 37mm

€27,95

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Beautifully made watch and responsive customer support

The watch is beautifully made and distinctive, I really enjoy wearing it. There was a small delay with the order, but communication was both responsive and supportive. Highly recommend.

very good watch for the price

very good watch for the price.
the edges are a bit too sharp, and the band is thicker than the original.
But all together a good deal.

以前、APのロイヤルオーク37mmを所有してましたが、これはかなり良い造りです。購入して良かったです。

Great watch

The Royal Oak being the only watch that I really love and being poor lol, seiko mod was the only best option. Nomods being the only company to provide a 37mm skeleton, I was pleased to find a way to get it already built.

The quality is great, the feeling is nice and it’s beautiful.

I had problems with delivery but Mathias Husby was really involved in getting everything sorted out.

I can only recommend this watch. It’s been a week and I’m really really happy with it.

Maybe I’ll command another one later on.

Nice homage.

Case finishing is solid. No complaints. The rose gold tone is great, and the skeleton dial is so nice to look at without feeling cheap. The NH72 accuracy in the watch I got is about -50 to -60 seconds per day, which is quite a bit slower than rated accuracy, so I will probably have to get it regulated which is annoying, however, this should be a relatively affordable fix. All in all, it will be cheaper to get it regulated than try to return. I still think it's great value for money, and the Seiko movement is a solid workhorse. If you have a larger collection, I would definitely pick this up, it's a very affordable way to enjoy the AP design.

5 stars: 72 (90%)
4 stars: 7 (9%)
3 stars: 1 (1%)
2 stars: 0 (0%)
1 star: 0 (0%)

This product has no reviews of its own. The merchant grouped it with related products, so the reviews shown are from across that group.

Great watch

The quality is great, the feeling is nice and it’s beautiful.

I had problems with delivery but Mathias Husby was really involved in getting everything sorted out.

I can only recommend this watch. It’s been a week and I’m really really happy with it.

Maybe I’ll command another one later on.

Best in the market! Hands down!!

I've had many royal oak cases from different makers, but this one from Nomods is by far the best when it comes to quality.

Good finish

Good finish. Perfect size case and thickness. Slight sharp edges

I have a couple of watches but somehow i cant take my eyes from the one done by Nomods

I have a couple of watches but somehow i cant take my eyes from the one done by Nomods. 👏👏👏

Royal Oak 37mm

Thank you Mathias, you did a great job.

Great quality

Great quality. Precision engineering. Fast and professional service. Highly recommended

First Seiko mod for me

Did not have any experience with building a wat h but was tempted to try. Did my first one using this case for nomods. I like it a lot!
Altered the blue nomods dial with some sandpaper

Unlike anyone.

Since I wore it on a trip, I've received many compliments on how beautiful and unique the watch is.

Magnifique !

Très belles finitions. Boîtiers très bien réalisé, fin, il renvoie très bien la lumière.
Une petite merveille.
Prix nettement plus élevé que des boîtiers équivalents sur d’autres sites, mais les finitions n’ont rien à voir et il vaut clairement son prix.

I love the 37mm

I love the 37mm, it makes all the difference!

Realy happy with the finition of the case

Realy happy with the finition of the case, no sharp, like a knife, edges. Everithing fits well, good product

Great craftsmanship & great service

I opted for the silver case , nh72 movement & v2 rose-gold hands.
Worked out great!
Amazing quality and very professional communication.
Can absolutely recommend.
I asked for the watch to be assembled before shipping….no problem.
All and all: nothing but praise for the Nomods team.

Seiko Oak 37mm silver

Die Uhr ist exakt so schön wie auf den abgebildeten Fotos und steht diesen in nichts nach.
Material, Verarbeitung und Elleganz sind meine Highlights.
Außerdem kommt die Uhr in einer sehr schönen Verpackung und Case inklusive einem Stellwerkzeug, welches super leicht zu bedienen ist.

Vielen Dank an Mathias und sein Team!

Liebe Grüße aus Deutschland 🇩🇪

nice elegant watch

good quality machining , the watch looks great, no complaints

Unexpectedly great and precise workmanship!

Unexpectedly great and precise workmanship! I'm ordering more!

Beautiful case and bracelet

Beautiful case and bracelet. All parts fit well, the only issue came when resizing the bracelet. I should have read through the website first - I hadn't read the warning to wash the bracelet in warm soapy water first and I had a screw become stuck. It all worked out fine in the end, just a minor annoyance. The 37mm size fits my 7-3/8" wrist much better than I thought it would. I like it so much that I ordered a SeikoNaut case/bracelet which I'm currently waiting for.

Bought the case

Bought the case. It is really a unique product that doesn't exist anywhere else in the market. For anyone who likes Royal Oak and like a smaller footprint, this is an unmissable offering. Thank you Nomods.

love the watch

Absolutely love the watch, it look realy good and adjusting the band was really easy

Very highly quality RO homage case

Very highly quality RO homage case. 37mm is a perfect fit for smaller wrists.

Perfect Case, Amazing Brand

This is the perfect size for this style of case. The quality of the cases is top-notch, they feel and look excellent. Additionally, Mathias from Nomods is also very friendly and professional and helped me out with all my questions and customization requests.

Very nice

Very nice case and very good quality
Nice seller

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Spare Caseback – Oak 37mm

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