Omega® Case Back Gasket ("Sans Fil" polyurethane), inside diameter 19.26 mm, outside diameter 20.50 mm, see all case numbers in description rifflers 40 mm are tempered and

40 mm are tempered and ready for use

80mm in height

styles 3 through 9

Overall Length (b)

with calendar @ 6 o'clock position

Omega® Case Back Gasket ("Sans Fil" polyurethane), inside diameter 19.26 mm, outside diameter 20.50 mm, see all case numbers in description rifflers 40 mm are tempered andOmega Case Back Gasket ("Sans Fil" polyurethane), inside diameter 19. 26 mm, outside diameter 20. 50 mm, see all case numbers in description Case Back Gasket Round "Sans Fil" polyurethane, inside diameter 19. 26 mm, outside diameter 20. 50 mm, height 0. 75 mm, to fit Omega case numbers: 5951201, 596774, 6951201, 7951000, 7951201, 795. 1201, 7951241, 7951400, 8951000, 8951201, 8951205, 8951221, 8951241, 8951324, 8951334, 8951344, 8951364, 8951374,