When to Replace Gaskets

Gaskets in a typical watch

• Caseback gasket (largest, most important).
• Crown gasket.
• Crystal gasket.
• Pusher gaskets on chronographs.

Replacement schedule

• Daily dive use: every 1–2 years.
• Occasional swimming: every 2–3 years.
• Desk-duty modern automatic: every 4–5 years.
• Vintage worn lightly: as part of every service.

DIY caveats

Replacing a caseback gasket is technically simple — but improper seating can leave a leak path. Always pressure-test after replacement. Best done at service time.