Omega® Case Back Gasket ("Sans Fil" polyurethane), inside diameter 27.76 mm, outside diameter 29.00 mm, see all case numbers in description Height 1.75 - 1.99 with 3 indicators: 24 hours

with 3 indicators: 24 hours @3

for Eterna® 1428

height of crown 4

Genuine Omega® crown wheel with crown wheel ring

Material: Unbreakable

Omega® Case Back Gasket ("Sans Fil" polyurethane), inside diameter 27.76 mm, outside diameter 29.00 mm, see all case numbers in description Height 1.75 - 1.99 with 3 indicators: 24 hoursOmega Case Back Gasket ("Sans Fil" polyurethane), inside diameter 27. 76 mm, outside diameter 29. 00 mm, see all case numbers in description Case Back Gasket Round "Sans Fil" polyurethane, inside diameter 27. 76 mm, outside diameter 29. 00 mm, height 1. 00 mm, to fit Omega case numbers: 7443, 1660277, 1660281, 1960078, 1960105, 1960189, 1960195, 1960261, 1960232, 1967443, 1920036, 1920037, 1980111, 1980114, 1980117, 3920005, 3980852 *Perrin Supply Ltd