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This generic o-ring watch case back gasket assortment is made specifically to fit Rolex® watch case backs. These round gaskets are made of solid tube rubber to create an airtight seal and are flexible enough to fit round watch case backs, as well as square, rectangle and other fancy shaped case backs.
***Esslinger & Co. is independent of and not affiliated with or sponsored by Rolex® Watch U.S.A. Inc. Rolex® warranty does not apply to non-genuine parts supplied by Esslinger & Co***