Active Member
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[China]
Address: 1610, Building 2B, Phase 2, Jindi Longcheng, Longcheng Street, Longgang District, Shenzhen, Guangdong, China
Contact name:Jeff
Shenzhen Tianzhili Crystal Co., Ltd. |
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Custom Made Artificial Flat Watch Glass Anti - Reflective Coatings Available
Product Description:
These round sapphire glass crystals come in a variety of thicknesses and diameters, are nearly unbreakable crystals making them highly prized by watchmakers. These watch crystals can be glued into most watch cases or pressure fit into most plastic watch crystal gaskets. Each sapphire watch crystal comes with a slightly polished bevel edge to give the watch crystal a nice finished look once it has been installed. These generic sapphire glass crystals can be used to replace the watch crystals of almost every name brand watch popular today, especially high-end watch crystals like those in Rolex watches, saving you both time and money.
Please try to offer more details as below when you place an order:
1. Buyer offers an original sample or related mounting parts and special request for attention or change.
2. If you are unable to provide samples, please provide drawings or try to provide more details.
We can provide flat/single domed/double domed and other shape watch glass,Welcome to email us.
About sapphire glass
SAPPHIRE CRYSTAL (sapphire glass) generally refers to synthetic
sapphire, generally used in the manufacture of the watch glass.
It is resistant to wear with tungsten titanium alloys and high-tech
ceramics. but sapphire materials can wear resistance and
withstand the strong impact, and some of the same or higher
hardness of the material (e.g., millstone, sandpaper, nail,
granite,
concrete wall, and floor, etc.) so sapphire glass are not likely to
scratch the surface of these materials.
Synthetic Sapphire Window Technique Index :
| Property | Specification |
| Thickness | 0.5-50mm |
| Size tolerance | 0.02mm |
| Edge Finish | Ground and beveled |
| Surface Quality | 40-20 scratch-dig |
| Surface Flatness | λ/4 @ 633 nm |
| Parallelism | ≤3 arc min (≤0.9 mrad) |
| Clear Aperture | >80% of central diameter |
| Hardness (Knoop) | 1370 kg mm-2 |
| Young's modulus | 3.4 x 1011 N m-2 |
| Thermal Limit | 22 W m-1 K-1 |
| Thermal expansion coefficient | 8.4 x 10-6 K-1 |
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