Fantasea Line FRX100 IV Instruction Manual page 16

b. Slip the tip of the inserted O-ring remover below the black O-ring, while making sure
the O-ring doesn't get damaged (image #8 on the following page).
c. Carefully hold the O-ring with your fingertips in order to remove it from the groove.
3. Cleaning the O-ring is a simple matter of wiping it with a damp, soft cloth to remove the
foreign matter. Be careful the cloth you use does not leave any of its own material behind
as this can also affect the effectiveness of the seal.
4. Apply a slight layer of silicone grease on the black O-ring. Please note that the amount of
lubrication required on the O-ring is only enough to allow it to slip into place without friction,
so it does not twist or become dislodged. More grease is not necessarily better, and in some
cases might interfere with the watertight seal of the housing.
5. When replacing the O-ring, place it back into the groove starting at one corner and gently
pressing it into the groove all around the housing until it is all seated in the groove and no
part of it is sticking up or out of the groove.
6. The white O-ring featured on the back side of the front door should be visually inspected
prior to each dive. If there is any debris present, gently wipe the area with a soft microfiber
cloth in order to cleanse it.
7. The white O-ring featured on the back side of the front door shouldn't be removed unless
it's damaged.
Image #7
FRX100 IV Housing Instruction Manual 20150809
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Image #8