The O-Rings Ikelite they are usually very soft silicone material, e they need to be periodically washed under running water and subsequently slightly lubricated exclusively with the fat provided together with the case, Otherwise the O-Ring deforms and stretches. It should be replaced at least once every 2 years for those who use the occasional flash of the Flash , every year for those who use the Flash + of 40/50 immersioniannue During the non-use periods it is recommended to remove the o-ring from the Flash and to store it in a closed plastic bag, if you leave the mounted o-ring it is recommended to keep the battery pack disassembled by the Flash , in order not to keep the O-Ring in crushing. A good photosub always has a spare o-ring with it it is impossible to find it on an island o.
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