Seahorse Perimeter O-Ring for the SE520 or SE540
The Seahorse perimeter O-ring seals out the elements,
protecting the contents from water, dust, and other contaminents. The
O-ring comes standard with the case, however we recommend replacing the
o-ring every couple of years.
TIP: To insure water resistance, keep the perimeter
O-ring gasket free of cuts, abrasions and foreign debris (sand, grass,
dirt, etc,), and check it on a regular basis. The best way to check
the O-ring is by removing it from the case and wrapping it around your
finger. Visually inspect different sections to ensure that there is
no evidence of cracking, peeling or abrasions that could cause your
case to leak.