7 Inspect the O-ring one last time.

Check the following one more time:

There is no dirt sticking to the O-ring.

The O-ring has not come out.

The O-ring is not twisted.

There are no scratches or squashed parts on the O-ring.

Thoroughly wipe any grease off your hands with a dry cloth and then wash your hands with water.

8 Close the buckle.

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Check that no foreign materials are sticking to the outer surface of the O-ring and the buckle on the front case and then close the Case.

Notes

To keep the Case completely airtight, do not scratch the surface of the O-ring that comes into contact with the sides of the Case.

Never use an O-ring that has been scratched or damaged by dirt etc. This will cause water leakage.

Each time you use the Case, remove the O-ring and check that there is no dirt, sand, hair or other foreign materials in the O-ring groove and then apply a thin coat of grease (supplied). If you apply too much grease, dirt and the dust may stick to the O-ring causing water leakage.

Be sure to bring a spare O-ring in case the O-ring that you are using becomes damaged or scratched.

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Panasonic DMW-MCTZ3 operating instructions Inspect the O-ring one last time