This is the Case Back Gasket
(rubber o-ring) which fits the older Planet Ocean Seamaster 2201.50.00, 2201.51.00 2209.50.00 models
These are Omega supplied service parts which fit the 42mm size Planet Ocean Seamaster Watch
Also fits the 42mm Manual Wind Moon Watch 3570.50 etc from 105.003 all the way until 145.022.
Omega 088.5139NS Case Back Seal Gasket fits 168.1651 168.1653 145.012 145.022
Items can only be returned if either faulty, in the case of the item not being required then it must be returned exactly as received. For example if the item is new in a sealed packet and/or has protective covers in place then it must be returned the same otherwise item is no longer new and the value is greatly reduced, these items can only be returned/refunded by agreeing a lower value with Swiss Limited Editions before returning reflecting the new lower value of the item.