Bulova® Case Back Gasket BU-G797 case reference 686 686-1
o-ring, case reference 686, 686-1, 769, 769-1, outside diameter 30.10 mm, inside diameter 28.90 mm
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Bulova®. Bulova® warranty does not apply to parts supplied by H. & W. Perrin Company Limited. Using generic crystals may devalue your watch.