Product Identity: A customized assortment of miniature black rubber sealing rings designed specifically for precision watch crown and stem sealing applications.Primary Function: These high-quality watch crown gaskets provide an effective waterproof barrier, protecting delicate internal watch movements from moisture and dust.Smart Design: Features a clear plastic hinged storage box with a dark foam insert that keeps each individual sealing washer securely in place and prevents mixing.Easy Identification: Equipped with a printed size reference chart on the lid and small yellow numbered labels for each position, making these O-rings incredibly easy to sort and select.Essential Hardware: An indispensable set of hardware for precision repairs, this collection of rubber sealing rings with storage box is perfect for maintaining water resistance in various small-scale devices.
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