MCWlaser 5pcs Laser Protective Windows Dia.20-50mm JGS1 Quartz Fused Silica Fused Silica Protective Windows for Laser Welding Head

$21.99 $17.99 Save 18%


Diameter and Thickness
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Diameter range:20-50MM
Thickness range:1-7MM
Diameter tolerance:±0.1mm
Thickness tolerance:±0.1mm
Clear aperture:≥90%
Surface Quality:20/10

Diameter and Thickness

Fused silica laser protective windows are designed to provide a high level of protection for both equipment and individuals in laser-based applications.
These windows are constructed from fused silica, a high-purity amorphous silicon dioxide material, known for its excellent optical properties, high thermal resistance, and low coefficient of thermal expansion. Fused silica offers exceptional transmittance across a wide range of wavelengths, making it ideal for various laser systems.
The windows act as a barrier, safeguarding operators and equipment from potentially harmful laser emissions by absorbing, reflecting, or diffusing the laser energy.


Imported Quartz crystal material, uniform texture, high mechanical strength, high temperature and high-pressure resistance, and the lens is not easy to crack and collapse.

Excellent substrate is selected, which has excellent optical performance and good thermal stability. The lens manufactured by slicing, polishing, grinding and other high-precision processes is resistant to high temperatures and has strong laser performance.

-High Accuracy: High processing accuracy, no burrs, and fast cutting speed.
-Faster Cutting: Fast cutting speed, high surface finish, and long service life.
-Good Durability: High-quality raw materials can ensure the durability and stability of the product.


Diameter/ Thickness(mm)


Welding Head



Fused silica




Fused silica




Fused silica




Fused silica




Fused silica




Fused silica



Fused silica





Cleaning tools: dust-proof gloves, finger sleeves, polyester cotton swabs, ethanol, and rubber air blowing
Cleaning method:
1.Put a finger cuff on your left thumb and forefinger.

2.Spray ethanol onto polyester cotton swabs.

3.The left thumb and index finger gently hold the lensSide edges.(Note that the fingerstall cannot touch themirror. Surface, so as not to leave traces)

4.Face the lens to both eyes and hold the polyesterfiber in your right hand Cotton swabs, from bottom totop or blowing on the lens surface. Clean both sides,and make sure again after cleaning. The following residues are not allowed: detergent,floating ash,Foreign matter and impurity.



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What about the shipping method and time?

By Expedited Shipping (by DHL/Fedex/UPS/DPD), door-to-door service.
1. General products,
CN Warehouse: 5-9 Business Days
UAS Warehouse: 3-5 Business Days
EU Warehouse:5-7 Business Days

2. Customized products (Only Support Shippment From China Warehouse)
The average period of production: 5-6 Business Days
Shipping: 5-9 Business Days
(Notification: Customs clearance inspections may cause delays of 2-3 days in logistics)1. General products

By Sea or Air to sea or airport (door-to-door service is optional)
It is for larger cargo.
The delivery time depends on the detailed shipping address, please check the exact time and cost with us.

What about the Customs Duty and VAT or Tax?

1.If your order was shipped from China,the pice doesn't include the import tariff duty, tax, or VAT.
The tariff duty, tax or VAT depend on local law and policy in difference country. The buyer needs to cover the cost.
2.If your order was shipped locally, such as from US ,AU or Europe,the price includes the duty,tax or VAT. The buyer don't need to pay customs duty, tax or VAT.
3 .Part of products in EU and US support PICK UP ON SITE Please check with us about the detail if you need.

If you can provide the invoice?

Yes,if you need the invoice,please contact with

What is your product warranty like?

All customer support services and policies will be only applied to orders on
MCWlaser Amazon Store

If your products are not purchased from our official website or our Amazon Store, but purchased through another third-party platform, we will not be responsible for your order.

Please view our detailed warranty instructions:

If you have any questions, please contact us:
Whatsapp/Wechat: 0086 18121236578

I failed to process the payment via credit card, what should I do?

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  • Use an alternative payment method: If the problem persists, you may want to consider using an alternative payment method, such as PayPal or bank transfer.

Remember to always exercise caution when making online purchases and to protect your personal and financial information.

Product and Service Support

Lifetime Technical Support

Regardless of whether the product purchased by the customer has reached the warranty period, MCWlaser provides lifelong technical support for all customers who purchase products at

Online Support & Expert Support

For complex technical issues, we provide expert support services (only for customers who purchase products at, and our experts can assist customers to solve problems through remote operation or video calls.

Discounts and Offers

We offer regular promotions, follow us on our website and social platforms, or ask our online customers. All promo codes are valid only at Coupons can only be used for shopping and cannot be exchanged for cash.

Quality Certification

Our products comply with CE certification and other quality certifications, you can buy our products with confidence. If you need certified documents to help you gain confidence, please contact our customers online or send us an email: