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This is a generic bezel gasket (O‑ring) designed for the Rolex Yacht-Master 42 reference 226659, measuring 34.2mm (outer diameter) × 0.6mm (cross‑section thickness) × 0.62mm (width), made of nylon material. Installed between the rotating bezel and the case, this gasket provides a water‑tight seal and the correct rotational friction, ensuring smooth bezel operation and maintaining water resistance. Replacing the original gasket when it becomes aged, hardened, or damaged restores smooth rotation and sealing.
Nylon Material – Wear‑resistant, aging‑resistant, and corrosion‑resistant for long‑lasting sealing.
O‑Ring Design – Standard circular cross‑section for uniform sealing and rotational friction.
Precise Dimensions – 34.2×0.6×0.62mm, specifically for the 42mm Yacht-Master bezel construction.
Restores Function – Replaces aged gaskets to eliminate bezel looseness or sticking, restoring smooth rotation and water resistance.
Generic Aftermarket – Non‑original but fully compatible in size and performance.
| Parameter | Details |
|---|---|
| Compatible Model | Rolex Yacht-Master 42 226659 (42mm Oyster case) |
| Type | Bezel gasket (O‑ring) |
| Shape | O‑ring |
| Outer Diameter | 34.2 mm |
| Cross‑section Thickness | 0.6 mm |
| Width | 0.62 mm |
| Material | Nylon |
| Function | Seals between bezel and case, provides rotational friction |
1. Is this a genuine Rolex bezel gasket?
No. It is a generic aftermarket replacement, not original, but fully compatible with the 226659.
2. How do I know if the gasket needs replacement?
If the bezel rotates too loosely, feels sticky, or if water or dust ingress is noticed under the bezel, the gasket has likely aged or failed.
3. How do I install it?
Place the gasket flat into the case groove without twisting, then press the bezel back on. Test for smooth rotation. Professional installation is recommended.
4. How does nylon compare to rubber?
Nylon has lower compression set and resists hardening over time, making it ideal for precision press‑fit applications. Rolex original bezel gaskets are also often nylon.
5. Is a water resistance test required after installation?
Yes, a water resistance test is recommended to ensure factory‑spec performance (typically 100m).
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