Olympus PT-027 - Manual (Page 5)

E-4
For Prevention of Water Leakage Accidents
When water leakage occurs while this product is being used, repair of
the camera housed in this product may become impossible. Please
observe the following cautions for use.
1. When sealing this product, make sure that no hairs, fibers, sand
particles or other foreign matter stick not only to the O-ring, but
also to the contact surface. Even a single hair or a single grain of
sand may cause water leakage. Please check with special care.
2. The O-ring is a consumption product. Please replace it at least
once a year by new one. Also perform maintenance for every use.
3. Deterioration of the O-ring will progress according to the use
conditions and the storage conditions. Immediately replace the O-ring
by a new one if it is damaged, shows cracks, or has lost its elasticity.
4. At the time of O-ring maintenance, clean the inside of the O-ring
groove and confirm the absence of dirt, dust, sand, and other
foreign matter.
5. Apply the specified silicone O-ring grease to the O-ring.
6. The waterproof function is not effective when the O-ring is not
installed correctly. When installing the O-ring, take care that it does
not project from the groove and that it is not twisted. Also, when
sealing the Case, close the lid after confirming that the O-ring has
not come out of the groove.
7. This product is an airtight construction made of plastic (polycarbonate).
When it is left for a long time in a car, on a boat, at the beach, or at
other places reaching a high temperature, or when it is subjected for a
long time to uneven external force, it may be deformed and the
waterproof function may be lost. Pay sufficient attention to temperature
control. Also do not place heavy objects onto the product during
storage or transport, and avoid unreasonable storage.
8. When the O-ring contact surface is pressed strongly from the
Examples for foreign matter sticking to the O-ring
Hair Fibers Grains of sand