$40.00
You Saved
This is a generic case back sapphire crystal for the Patek Philippe Nautilus 7118, measuring 26.6mm in diameter and 1.1mm in thickness with a flat round profile. As a high-quality replacement, it directly substitutes a damaged or scratched original case back crystal, allowing you to continue admiring the intricate movement.
Sapphire Crystal – Synthetic sapphire, Mohs 9, highly scratch-resistant and optically clear.
Precise Dimensions – 26.6mm diameter × 1.1mm thickness, flat round profile for exact fit in the Nautilus 7118 case back.
Exhibition Back – Transparent design allows a clear view of the movement (e.g., Caliber 324 S C).
Generic Aftermarket – Non‑original but dimensionally identical to factory specification; cost‑effective.
Easy Installation – Direct replacement for the original case back crystal; requires a proper gasket.
| Parameter | Details |
|---|---|
| Compatible Model | Patek Philippe Nautilus 7118 (all variants, e.g., 7118/1A-010) |
| Type | Generic (aftermarket, not genuine) |
| Material | Sapphire crystal |
| Diameter | 26.6 mm |
| Thickness | 1.1 mm |
| Shape | Flat round |
| Function | Exhibition case back crystal |
1. Is this a genuine Patek Philippe case back crystal?
No. This is a generic aftermarket replacement, not manufactured by Patek Philippe, but its dimensions exactly match the Nautilus 7118 case back opening.
2. Will water resistance be affected after installation?
Water resistance depends on the sealing gasket, not the crystal itself. Always use a new, proper gasket and have a professional watchmaker perform a pressure test after installation (Nautilus 7118 is rated at 60m). Professional installation is recommended.
3. Does this crystal fit all versions of the Nautilus 7118?
Yes. All variations (steel, rose gold, different dials) share the same 26.6mm × 1.1mm flat round case back crystal.
4. Is a gasket included with the crystal?
Usually not. The case back gasket must be purchased separately. Please confirm with the seller before ordering.
5. How can I tell if my watch needs a new case back crystal?
Replace the crystal if it has deep scratches, cracks, or chips that affect visibility of the movement or compromise water resistance. Always measure the original crystal to confirm dimensions.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
3,000+ watch movements and parts in stock.
Trusted by watchmakers worldwide.
Personalized sourcing support via [email protected] or WhatsApp +86 18620212114.
