0.8mm Height 0.35 Thick O Ring Watch Crystal Gasket 16mm to 40mm Inner Diameter Waterproof Seal Ring for Front Watch Glass(Diameter 31mm)

0.8mm Height 0.35 Thick O ring Watch Crystal Gasket 16mm to 40mm Inner Diameter Waterproof Seal Ring For Front Watch Glassfront watch crystal glass waterproof sealing Gasket Ring.This is Not Back case sealing O-ring.Made of safe and durable TFLmaterial.This is precise watch parts, please measure the watch glass groove careful to get accurate size.Diameter: 16-40mm (inner diameter); Thickness: 0.35MM, Height:0.8mm.Package included: 1x watch crystal sealing ring.[Select reference] The inner diameter of the waterproof ring is selected to be equal to the diameter of the glass The height of the waterproof ring should be less than the height (thickness) of the glass. The outer diameter of the waterproof ring can be selected to be between 0-0.2mm larger than the inner diameter of the watch case groove (It is usually recommended to choose a waterproof ring with an outer diameter larger than the case groove by about 0.1-0.2mm for better waterproofing)For example, the diameter of the watch glass is 29.5mm, and the inner diameter of the watch case is 30.2mm Waterproof ring optional: 29.5mm inner diameter, 0.35mm thickness, outer diameter is 30.2mm (usable, just right, may be a bit loose) 29.5mm inner diameter, 0.4mm thickness, and 30.3mm outer diameter (recommended) 29.5mm inner diameter, 0.45mm thickness, 30.4mm outer diameter (recommended)Material : Tempered GlassWith Retail Package : YesFeatures : Ultra-thinOrigin : Mainland ChinaMaterial : TFL

• Quality O-ring made from durable materials for long-lasting performance
• Designed for watch glass with inner diameters ranging from 16mm to 40mm, ensuring a perfect fit
• 0.8mm height and 0.35mm thickness provide optimal sealing for waterproof applications
• Ideal for watch repair enthusiasts and professionals looking to replace worn-out gaskets
• Easy to install, making it a convenient choice for maintaining your timepiece's integrity