SHANGHAI FAMOUS TRADE CO.,LTD
SHANGHAI FAMOUS TRADE CO.,LTD
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About Custom
Product parameters glasssurface technologypolishing ,chamfermiddle height random.contace me if you have other specific needsThese 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. Except for sapphire glass, if you need another watch part, please contact me.Welcome to long-term cooperation. 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 can not offer a sample, please try to offer more details as possible as you can
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.
| Material | Properties | Applications |
| BK7 | Transmission Range: 330-2100nm Refractive Index: 1.5164@588nm | Most popular and low cost Visible and near IR spectrum applications |
| Fused Silica | Transmission Range: 185-2500nm Refractive Index: 1.4858@308nm Low Thermal Expansion Coefficient: 0.54 x 10-6K | UV to IR spectrum Best choice for thermal resistance application. |
| Sapphire | Transmission Range: 180-4500nm Refractive Index: 1.755@1000nm Strong Hardness | Best choice for scratch resistance applications Thinner optics Wide Transmission Range |
| Calcium Fluoride | Transmission Range: 170-7800nm Refractive Index: 1.399@5000nm Little Hygroscopic Susceptibility High Thermal Expansion Coefficient: 18.85 x 10-6K | IR laser applications |
| MgF2 | Transmission Range: 120-7000nm Refractive Index: 1.376@700nm | UV laser applications |
Applications
1. window/ sight glass in high temperature situation 2. optial lens 3.led substrates
4. crucibles,trays,boats. 5. UV transmitting optical
6. protective glass cover for phone,camera,watch,scanner etc.
7. Sapphire blade
8. Sapphire bearing
9. Sapphire/Ruby ball for three-coordinate measuring machine
4. our sapphire produce step
About size we can provide
| Material | sapphire,Fused silica,optical glass, etc |
| Dimension | 0.1-400mmxthickness0.08-100mmt |
| Dimension Tolerance | ±0.01~0.15mm |
| Angle Tolerance | 3'~5' |
| Surface Quality | 60/40,40/20,20/10 |
| Flatness | Lambda /4 Lambda /10 |
| Bevel | 0.25 mm at 45 degrees |
| Coating | AR coating , Enhanced aluminum or custom |
FAQ
Q: How to pay?
A: T/T, Paypal, before the delivery.
Q: What's your MOQ?
A: (1) For inventory, the MOQ is 1pcs. if 10pcs it's better.
(2) For customized products, the MOQ is 3 pcs up.
Q: What's the delivery time?
A: (1) For the standard products
For inventory: the delivery is 5 workdays after you place the order.
For customized products: the delivery is 2 -4 weeks after you order contact.