Replacement caseback for the Royal 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 Royal 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 Royal Oak 37mm V2 Ultrathin case only. It is not compatible with the Royal Oak 41mm case, the Nautilus 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 Royal Oak 37mm V2 Ultrathin case. It will not fit the Royal Oak 41mm case, Nautilus 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 Royal Oak 37mm cases · Recommended with 37mm Royal Oak · Royal 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.
