O-rings
An O-ring is a component in your camera's underwater housing, for example. Thanks to the O-ring, water does not seep through small openings in the housing. It is best to replace this every so often, especially when it gets a bit dried out, to prevent water from entering the underwater housing anyway.
Panasonic replacement O-ring for UW housing
21.-
Aquatech Replacement O-ring Set - EDGE Sport Housing Series (Front & Back)
43. 85
Aquatech Replacement O-ring Set - EVO III Sport Housing Series (Front & Back)
List price 54.99
30.-
Sealife O-ring set 2-delig voor SL961 Digital Pro Flash (SL96114)
List price 19.99
9.-
AxisGO 7 PLUS O-Ring Kit
List price 24.95
8.-
Sea&Sea Sea Arm 8 - Spare O-Ring Set (4 pieces)
List price 6.50
4.-
Canon CY4-4517-000 O-Ring for WP-DC-48
23. 73
Sealife O-ring for SportDiver Housing
List price 24.95
21. 18
Sealife SL74017 O-Ring for DC2000 Housing
List price 24.95
18.-
Sea&Sea O-Ring Set for DX-1G
List price 17.90
16. 94