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Maintenance
After you have finished using an O-ring
• After you have used the marine pack, be sure to perform the following:
– Wash the marine pack with fresh water with the buckle closed to remove salt or
sand.
– Insert the marine pack in fresh water for about 30 minutes with the buckle closed.
If salt is left on the marine pack, metal parts and the O-ring might be damaged, and
cause water leaks.
– When sun oil is stuck to the marine pack, wash off with lukewarm water.
If sun oil is left on the marine pack, the surface of the marine pack might become
discoloured or become damaged.
– Wipe the inside of the marine pack with a soft, dry cloth. Do not wash with water.
• Remove the O-ring each time that you have finished using it, and check it.
If the marine pack is dried with sea water still in the O-ring groove, salt crystals form,
and might impair the O-ring's functions.
• Do not use thinner, benzene, alcohol or other solvents as they will damage the
surface finish.
Storing O-rings
• Prevent dust from sticking to O-rings.
• Apply a thin coating of grease to the O-ring, set it in the groove, and store in a well-
ventilated location. Do not close the buckle.
• Avoid storing O-rings in hot, cold or humid locations, and placing in naphthalene or
camphor. These locations and solutions will damage the materials.
How to store O-rings
• To maintain the O-ring's functions, avoid storing them in hot locations or in the direct
sunlight.
• Do not place the spare O-ring under heavy objects. Doing so might deform the
O-ring.
O-ring life
Replace the O-ring with a new one after one year of use.
Even if the O-ring is not cracked or scratched, deformation or wear reduces the
waterproof qualities of the O-ring. Replace the O-ring with a new one if cracking, skew,
distortion, fine splitting, scratches, sand-biting, etc. is found.
Grease
Use the supplied grease. Using other manufacturer's grease
will damage the O-ring, and cause water leaks.
O-ring and grease
Contact your nearest Sony Service Center.