O-Rings - Xeos Technologies Inc. Rover User Manual

O-Rings

O-rings are critical to the waterproof nature of the Rover. O-rings should be visually inspected to
make sure they are properly seated in the groove and to ensure there is no visible damage to the
O-ring.
If the O-rings pass visual inspection and have been deployed for 2 months or less, the O-rings do
not need to be replaced.
If the O-rings fail visual inspection or have been deployed for longer than 2 months, the O-rings
should be replaced prior to re-deploying the Rover.
Inside the Rover's acetyl housing, there are two (2) O-rings:
1) 568-138 90D DURO BUNA (Top, White Section)
2) 568-137 90D DURO BUNA (Bottom, Black Section)
To replace an O-Ring:
 Remove the old O-ring using a soft tool (toothpick) to avoid scratching the o-ring groove.
 Clean all dirt away from the threads and grooves where the old O-ring was seated using
a lint-free cloth, cleaning alcohol, and a soft brush.
 Apply a thin layer of O-ring lubricant (Molykote 111 from Dow Corning) to the new O-ring
o For the outer ring, gently slide the new O-Ring down over the threads of the black
section of enclosure and into the O-ring groove, above the lip of the enclosure.
o For the inner ring, gently slide the new O-Ring down inside the white section of
enclosure until it is seated in the O-Ring groove.
Note: It is very important to be aware of where the O-ring is sitting in the two O-Ring locations.
If the O-ring is not sitting perfectly in its groove, there will not be a perfect seal and could cause
fatal damage to the unit.
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