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This is a high-quality generic replacement sapphire crystal for the Rolex Sea-Dweller 4000 reference 16600 (40mm case), measuring 29.4mm in diameter. Made of synthetic sapphire glass (Mohs hardness 9), it offers exceptional scratch resistance and excellent optical clarity, serving as a direct substitute for a damaged or scratched original crystal.
Sapphire Crystal – Mohs 9, highly scratch-resistant and optically clear.
Precise Diameter – 29.4mm, exact fit for the Sea-Dweller 16600 case.
Generic Aftermarket – Non-original but manufactured to OEM specs for direct replacement.
Restores Water Resistance – When properly installed with a new gasket, maintains the watch‘s high water resistance (1220m/4000ft for Sea-Dweller).
Cost-Effective – Affordable alternative to genuine crystals for repair or restoration.
| Parameter | Details |
|---|---|
| Compatible Model | Rolex Sea-Dweller 4000 16600 (40mm case) |
| Type | Generic aftermarket |
| Material | Synthetic sapphire |
| Shape | Round, flat or slightly domed (confirm with product) |
| Diameter | 29.4 mm |
| Thickness | Not specified (typically ~2.5‑3.5mm, confirm with product) |
Rolex Sea-Dweller 4000 16600 (40mm steel case, 1220m water resistance)
Other Rolex models using the same 29.4mm round crystal (e.g., certain Sea-Dweller, Submariner references – verify original size)
Replacement of damaged, deeply scratched, or aged original crystals
Restoring factory appearance and water resistance during service
1. Is this a genuine Rolex crystal?
No. It is a generic aftermarket replacement, not original, but matches the 16600 dimensions.
2. Does this crystal have a Cyclops date magnifier?
The original Sea-Dweller 16600 does not have a Cyclops (date magnifier). This generic crystal is likely flat without magnification. Confirm with the seller.
3. What should I pay attention to during installation?
Use a new sealing gasket, apply UV adhesive, and press evenly with a crystal press. Clean the case groove. Professional installation is strongly recommended, followed by a water resistance test.
4. Will the original 1220m water resistance be maintained?
Proper installation with a new, correct gasket can restore similar water resistance. A pressure test is essential to verify.
5. Is a gasket included?
Usually not. The sealing gasket must be purchased separately. Confirm with the seller.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
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