Originally Posted by
walkerwek1958
Is this one of the Seikos with a rubber O ring securing the bezel creating an interference fit? If so I would be wary of using a light oil such as WD40, it may cause the rubber to swell slightly and create more problems. Provided the watch is watertight I would try submerging in water and washing up liquid whilst trying to operate the bezel, hopefully this will free it up. I’ve never tried dental floss, sounds like it might be a good way to get dirt out without taking the bezel off.
Its surprising how much dirt accumulates under a bezel, worst I’ve see was a bezel packed full if dried up soap which had caused the aluminium insert to start corroding, the owner admitted to wearing it in the shower frequently!