Hottptyer watch rear Cover O Ring Gasket 0.7mm Thick Rubber Keeps watches water resistant using sealing gaskets and 10 sizes with 500pcs total for covers

[WATER RESISTANCE] Designed as a watch rear cover sealing gasket this rubber O ring helps maintain water resistance when properly installed. It supports a practical replacement routine and can help extend the service life of a compatible watch. [0.7MM RUBBER] The 0.7mm thick rubber material offers a practical replacement option for a compatible watch rear cover. Its simple gasket form is easy to handle during maintenance and supports a neat seal when fitted correctly to the matching cover. [10 SIZE OPTIONS] This set includes 10 kinds of sizes to help match different watch rear covers and replacement needs. Having multiple size choices in one assortment makes selection easier and supports routine watch accessory maintenance at home or in a repair setting. [500PCS TOTAL] The package contains 500 rubber gaskets in total with approximately 50 pieces per pack. The quantity supports repeated replacement work while separate packs make the O rings easier to access organize and use as needed. [EASY REPLACEMENT] These watch O rings are intended as replacement accessories for watches and are easy to replace with the proper size. A correctly fitted gasket helps keep the watch water resistant and may extend its service life.