Premium Watch Crown O-Ring - High Elastic Waterproof Sealing Ring for Watch Repair | Durable & Superior Leak Protection | Ideal for Diving, Swimming & Outdoor Activities

Feature:1. Superior sealing waterproof. A variety of specifications to choose from.2. Suitable for different sizes of watches, can be used in a variety of parts of the watch.3. Rubber gasket set, mounted on the back cover or watch crown, prevents water from entering the watch.4. Suitable for watchmakers and watch repairing workers to use.5. Made of quality rubber material, good sealing effect and high elastic.Specification:Condition: 100% Brand NewItem Type: Watch Crown O‑RingMaterial: Rubber O Ring (Unit MM) Thickness: 0.6Diameter: 12mm / 0.47in, 13mm / 0.51in, 14mm / 0.55in, 15mm / 0.59in, 16mm / 0.63in, 17mm / 0.67in, 18mm / 0.71in, 19mm / 0.75in, 20mm / 0.79in, 21mm / 0.83in, 22mm / 0.87in, 23mm / 0.91in, 24mm / 0.94in, 25mm / 0.98in, 26mm / 1.02in, 27mm / 1.06in, 28mm / 1.1in, 29mm / 1.14in, 30mm / 1.18inWatch Crown Waterproof Seals (MM) Inner Diameter x Outer Diameter x Thickness: 1.4 x 0.6 x 0.41.5 x 0.6 x 0.71.6 x 0.6 x 0.51.7 x 0.7 x 0.51.8 x 0.8 x 0.51.9 x 0.8 x 0.72.4 x 1.4 x 0.52.8 x 1.75 x 0.533.2 x 1.8 x 0.73.6 x 1.7 x 0.8 Package List:950 x O-Ring 100 x Watch Crown Waterproof Seals