180 Piece Watch Gasket Kit O Rings 18 Sizes 16-30mm Rubber Seals for Watch Back Case Waterproof Repair and Replacement DIY Watchmaking Set

Ultimate Watch Gasket Kit 180 Piece O Ring Set 18 Sizes 16mm to 30mm Rubber Seals Pack
✔️ 180 pcs in 18 sizes 16mm to 30mm dia 0.5mm and 0.6mm thick for watch back case repair

Complete watch gasket kit with 180 rubber O rings in a 3 pack style assortment across 18 sizes, built for sealing watch back cases and restoring water resistance. A handy solution for professional watchmakers and DIY repairs, helping protect against dust and moisture across many watch models.

✅ Total pieces: 180
✅ Size range: 16mm to 30mm diameter
✅ Thickness options: 0.5mm and 0.6mm
✅ Number of sizes: 18
✅ Material: durable rubber
✅ Designed for watch back case sealing
✅ Helps restore water resistance and dust protection
✅ Ideal for repair shops and DIY use

Size Range Table
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Diameter (mm)    Thickness (mm)
16               0.5 / 0.6
18               0.5 / 0.6
20               0.5 / 0.6
22               0.5 / 0.6
24               0.5 / 0.6
26               0.5 / 0.6
28               0.5 / 0.6
30               0.5 / 0.6
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💡 How do you choose the correct watch gasket size for a back case seal?
Selecting the right gasket size ensures proper sealing and maintains water resistance.

• Measure the groove or old gasket diameter accurately

• Match thickness to maintain proper compression

• Avoid overstretching to prevent seal failure

• Use correct size to keep dust and moisture out effectively