Servicing Rolex 16000 —Calber 3035: The Importance of Case Maintenance and Care

Case Condition, Water Resistance, and Service Findings

The Rolex movement in this example was found to be in very good mechanical condition and performed as expected after a complete disassembly, professional cleaning, and lubrication. From a mechanical standpoint, the movement showed no abnormal wear and was successfully restored to reliable operation. However, inspection of the case revealed significant issues related to water resistance.

The case gaskets were severely hardened and brittle, clearly indicating that the watch had gone an extended period without proper servicing (see images below). A Rolex watch’s water resistance is entirely dependent on the condition of its gaskets, and once these seals lose elasticity, the case becomes highly susceptible to moisture intrusion. In many cases, gaskets can begin to degrade in as little as five years.

Further issues became apparent once the bezel was removed. Corrosion and mineral buildup were present between the bezel and case, as well as at the crystal-to-case sealing surfaces. Years of repeated water exposure allowed moisture to penetrate these areas, resulting in permanent corrosion of the stainless steel. Damage to case back gasket surface and the rim where the acrylic crystal compresses to form a seal compromised the sealing surfaces, ultimately causing the case to fail water-resistance pressure testing even after cleaning, gasket, and crystal replacement. While the movement itself was successfully serviced, the case damage illustrates how water intrusion can lead to irreversible structural issues that cannot be corrected through routine maintenance alone.

This example highlights what can occur when a watch is regularly worn while bathing or swimming without proper care afterward. Rolex recommends thoroughly rinsing the watch with fresh water after exposure to saltwater or chlorinated pools to remove residue, followed by drying with a soft cloth. The images below demonstrate the long-term effects of frequent submersion without proper rinsing and drying, underscoring the importance of regular service and mindful use to preserve both function and condition.