The Nikon WP-OG1 O-Ring & Grease Set is a replacement set of accessories for CoolPix Waterproof Cases (e.g. WP-CP2, CP3, CP4 & CP5).
Nikon recommends that you change the O-ring in your waterproof case at least once a year. Use only this O-ring and grease with your CoolPix Waterproof Case.
Reviews Nikon O-Ring for Nikon CoolPix Waterproof Cases (WP-CP1, WP-CP2, WP-CP3, WP-CP2-4, WP-CP5)