Bulova® Case Back Gasket BU-G4139
o-ring nylon (clear), case reference C893812, outside diameter 12.70 mm, inside diameter 11.70 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.