Waterproof Watch Head Ring - Rubber Watch Crown O-Ring Seal for Watch Repair - Durable & Small Replacement Part for Swimming, Diving & Outdoor Activities

Feature: 1. Rubber O‑ring watch gaskets are used to keep watches waterproof, prevent water getting into watch. 2. Made of rubber, flexible and wear‑resistant and durable, high elasticity and reliable in use, will not damage your watch 3. Comes in 10 different sizes to fit different crowns, suitable for watch makers and watch repairing workers to use. 4. Take out the lever, put it into the waterproof ring and install the lever, easy and convenient for installation. 5. Professional watch repair accessories, give you a satisfactory experience and has exquisite workmanship. How to Use: Take out the lever, put it into the waterproof ring and install the lever. Specification: Item Type: Watch Crown O-Ring Material: Rubber Color: Black Applicable Crowd: Suitable for watch maintenance professionals Application Scenario: Used to keep the watch level waterproof, prevent water getting into watch Size: Approx. 1.4 x 0.6 x 0.4mm / 0.06 x 0.02 x 0.02in 1.5 x 0.6 x 0.45mm / 0.06 x 0.02 x 0.02in 1.6 x 0.6 x 0.7mm / 0.06 x 0.02 x 0.03in 1.7 x 0.7 x 0.5mm / 0.067 x 0.028 x 0.02in 1.8 x 0.8 x 0.5mm / 0.07 x 0.031 x 0.02in 3 x 1.7 x 1.65mm / 0.12 x 0.067 x 0.06in 2.8 x 1.8 x 0.5mm / 0.11 x 0.07 x 0.02in 2.4 x 1.4 x 0.5mm / 0.09 x 0.06 x 0.02in 2 x 1 x 0.5mm / 0.08 x 0.04 x 0.02in 1.9 x 0.8 x 0.55mm / 0.07 x 0.03 x 0.02in Package List: 1 x Storage Box 1 x Box of Watch Crown O‑Ring