Omega® Case Back Gasket ("Sans Fil" polyurethane) OM-198ZW5009 (replacement for 1980027), inside diameter 20.76 mm, outside diameter 22.00 mm, see all case numbers in description

Omega® Case Back Gasket ("Sans Fil" polyurethane) OM-198ZW5009 (replacement for 1980027), inside diameter 20.76 mm, outside diameter 22.00 mm, see all case numbers in description

Case Back Gasket Round "Sans Fil" polyurethane, inside diameter 20.76 mm, outside diameter 22.00 mm, height 0.75 mm, to fit Omega® case numbers: 5660285, 5660286, 5660295, 5660296, 5661201, 5950021, 5960030, 5960035, 5960039, 5960052, 5960071, 5961201, 6660285, 6660286, 6660295, 6660296, 6661201, 7660286, 7660885, 7660886, 7660895, 7660896, 7661201, 7661206, 7661210, 7661222, 7661241, 7960825, 7960830, 7960834, 7960844, 7960868, 7960869, 7961201, 8660885, 8660886, 8660895, 8660896, 8661201, 8661211, 8661213, 8661218, 8661241, 8961201, OM-198ZW5009 (replacement for 1980027)

* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Omega®. Omega® warranty does not apply to parts supplied by H. & W. Perrin Company Limited. Using generic parts may devalue your watch.