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China factory - SHANGHAI FAMOUS TRADE CO.,LTD

SHANGHAI FAMOUS TRADE CO.,LTD

  • China,Shanghai ,Shanghai
  • Verified Supplier

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China Red Single Sapphire Crystal Glass , Custom Sapphire Watch Crystal Transparent
China Red Single Sapphire Crystal Glass , Custom Sapphire Watch Crystal Transparent

  1. China Red Single Sapphire Crystal Glass , Custom Sapphire Watch Crystal Transparent
  2. China Red Single Sapphire Crystal Glass , Custom Sapphire Watch Crystal Transparent
  3. China Red Single Sapphire Crystal Glass , Custom Sapphire Watch Crystal Transparent
  4. China Red Single Sapphire Crystal Glass , Custom Sapphire Watch Crystal Transparent

Red Single Sapphire Crystal Glass , Custom Sapphire Watch Crystal Transparent

  1. MOQ: 5PCS
  2. Price: By case
  3. Get Latest Price
Payment Terms T/T, Western Union
Supply Ability 500pcs per month
Delivery Time 4-6weeks
Packaging Details standard plastic case
Material Doped Al2O3 Sapphire crystal
Color Pink/ Red
size Can be customzied
surface polished
character wear-resisting
Hardness 9.0
Brand Name zmkj
Model Number Pink color sapphire watch case
Place of Origin CHINA

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T, Western Union Supply Ability 500pcs per month
Delivery Time 4-6weeks Packaging Details standard plastic case
Material Doped Al2O3 Sapphire crystal Color Pink/ Red
size Can be customzied surface polished
character wear-resisting Hardness 9.0
Brand Name zmkj Model Number Pink color sapphire watch case
Place of Origin CHINA
High Light sapphire crystal watch facescratch proof watch glass
Blue/ Green/ Pink/ Red/ White Sapphire single crystal watch glass case/ Sapphire optical glass for watch lens

Sapphire Glass

 
Sapphire optical windows are ideal for applications where high pressure, vacuum, or corrosive atmospheres are a consideration. Sapphire, a single crystal form of Al2O3, is resistant to attack by strong acids due to its high dielectric constant. It has high compressive strength and a high melting point. It is also resistant to UV radiation darkening. Our sapphire optical windows are not coated, but a single layer coating of MgF2 on each surface of the window increases the single surface transmittance to 99% throughout the entire visible spectral region. Please note the SAW series sapphire windows are provided in random axis orientation by default and its birefringent nature could affect the polarization state of your application.

 

 

Diameter: 30-50mm or customized
Thickness: 3.75mm
N.W.: 8.5g
Vickers hardness: HV2000-2500
Mohs hardness: 9 mohs
High Crystal Purity: > 99.995%
Compressive strength: 21000kg /cm²
Crystal texture: Hexagonal lattice structure
Specific heat: (20~350ºC)0.181cal/g°C(25ºC)
Thermal conductivity:

(20°C) 0.09calc.cm.ºC(25ºC)

 

 

 

 


 

Sapphire Glass for watch case

 
 

1. Ultimate Scratch Resistance

 

With a Mohs hardness of 9, sapphire is second only to diamond. It resists scratches from keys, sand, and other daily objects, keeping the watch surface pristine over time.

 

 

 

2. Crystal-Clear Transparency

 

 

Sapphire offers exceptional optical clarity, ensuring the watch dial remains highly visible and easy to read from all angles, enhancing both aesthetics and user experience.

 

 

3. Luxurious Appearance

 

 

Featuring a smooth, glossy surface and gemstone-like brilliance, sapphire glass adds a premium, sophisticated touch — a preferred material for luxury timepieces.

 

 

4. Anti-Aging & UV Resistance

 

Unlike plastic or ordinary glass, sapphire glass does not yellow or degrade over time, maintaining its clear appearance for years.

 

 

 

 

5. High Durability for Daily Wear

 

 

Sapphire is highly resistant to pressure and impact, making it ideal for everyday use, travel, and sports — minimizing the risk of cracking or breaking.

 

 

6. Customizable for Unique Designs

 

Available in various colors (blue, pink, green, etc.), thicknesses, and surface styles (flat, domed, coated), sapphire glass can be tailored to meet diverse brand design requirements.

 

 

 

 


 

Sapphire watch case




 
Process Step
 
        Sapphire body                                            Sapphire rough shape               Sapphire CNC engraving and milling 
 -------> -------> 

 

 

 


 

Sapphire watch case's material

Our sapphire watch case material is crafted from high-purity single-crystal Al₂O₃, offering exceptional scratch resistance, optical clarity, and long-lasting durability. It is available in a wide range of vibrant colors—including clear, blue, pink, red, green, and white—achieved through uniform doping during crystal growth, not surface coating.

Each piece is 100% bubble-free, inclusion-free, and defect-free, ensuring flawless transparency and consistent light transmission. Advanced processing eliminates internal stress, making the material optically pure and structurally stable.

This sapphire material combines beauty and performance, with excellent resistance to scratches, UV light, and thermal stress. It is ideal for luxury mechanical watches, smartwatches, and sports models.

We support OEM customization in color, thickness, shape, and engraving. Choose our sapphire crystal for a premium, reliable, and visually stunning watch case solution.

 


 

Company information

 
We specialize in the design and volume manufacturing of high performance optical components such as lens,prisms, windows,filters,mirrors and more for use in optical instruments and laser systems, as well as for military, telecommunications,medical, environment monitoring industry,material is widely ranged from optical glass to IR and UV glass.
As a Fast-growing supplier in Optics, we offer excellent service and good quality items,our products have been appreciated by many European and American customers,of course we build a long-term cooperation. zmkj has quickly established itself as a leader in optical components from its advanced technology and quality control.
 

Sapphire Watch case Q&A

 

Q1: What makes sapphire glass better than regular watch glass or plastic?

A1: Sapphire glass has a Mohs hardness of 9, making it nearly as hard as diamond. It is extremely scratch-resistant, does not yellow over time, and offers excellent optical clarity, making it far more durable and premium than regular mineral glass or plastic.

 

 
 

Q2: Are your sapphire watch cases really made from 100% sapphire crystal?

A2: Yes. Our sapphire watch cases are made from high-purity, single-crystal Al₂O₃ (aluminum oxide), grown through a precision crystal growth process. Each unit is free of bubbles, inclusions, and surface flaws, ensuring both visual beauty and mechanical strength.

 

 

Q4: What sizes and shapes are available for the sapphire glass?

A4: Standard diameters range from 30–50 mm with a thickness of around 3.75 mm. However, we support OEM customization, including shape (flat/domed), edge profile, color, and even engraved designs based on your technical drawings.

 

 

Company Details

Bronze Gleitlager

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Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer,Agent,Importer,Exporter,Trading Company

  • Year Established:

    2013

  • Total Annual:

    1000000-1500000

  • Ecer Certification:

    Verified Supplier

SHANGHAI FAMOUS TRADE CO.,LTD. locates in the city of Shanghai, Which is the best city of China, and our factory is founded in Wuxi city in 2014. We specialize in processing a varity of materials into wafers, substrates and custiomized optical glass parts.components widely used in electronics, op... SHANGHAI FAMOUS TRADE CO.,LTD. locates in the city of Shanghai, Which is the best city of China, and our factory is founded in Wuxi city in 2014. We specialize in processing a varity of materials into wafers, substrates and custiomized optical glass parts.components widely used in electronics, op...

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Get in touch with us

  • Reach Us
  • SHANGHAI FAMOUS TRADE CO.,LTD
  • Room.1-1805,No.1079 Dianshanhu Road,Qingpu Area Shanghai city, China /201799
  • https://www.sapphire-substrate.com/

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