# Customized BOROFLOAT 33 BF33 Optical Wafer Optical Glass Window Substrate

> Customized BOROFLOAT 33 BF33 Optical Wafer Optical Glass Window Substrate — a glass wafer: Glass, Customized, From 0.2 to 50mm thick, As required. Specs…

- Page: https://machiningglass.com/products/customized-borofloat-33-bf33-optical-wafer-optical-glass-window-substrate/
- SKU: MG-66F87F
- Category: Glass & Quartz Wafers > Glass & Borosilicate Wafers
- Image: https://machiningglass.com/wp-content/uploads/2026/10/Customized-BOROFLOAT-33-BF33-Optical-Wafer-Optical-Glass-Window-Substrate.webp
- Updated: 2026-10-24

Product type: Optical Wafer. Application: Medical, Civil, Labs, Astronomical. Model: Wafer 3.

## Overview

Customized BOROFLOAT 33 BF33 Optical Wafer Optical Glass Window Substrate: a glass wafer made from Glass. Listed geometry: size Customized, From 2mm to 400mm, thickness Customized, From 0.2 to 50mm, plano shape. Coating: As required; surface quality As required; flatness As required. Listed for Medical, Civil, Labs and Astronomical applications. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.

## Specifications

| Parameter | Value |
| --- | --- |
| Material | Glass |
| Type | Optical Wafer |
| Shape | Plano |
| Dimension | Customized, From 2mm to 400mm |
| Thickness | Customized, From 0.2 to 50mm |
| Surface Quality | As required |
| Flatness | As required |
| Parallelism | up to 3arcmin |
| Clear Aperture | >90% Centered |
| Application | Medical, Civil, Labs, Astronomical |
| Usage | Medical, Auto, Consumer, Datacom... |
| Model NO. | Wafer 3 |
| Dimension Tolerance | up to 0.02mm |
| Thickness Tolerance | up to 0.02mm |
| Coatings | As required |
| Lidt | As required |
| Bevel | Break Sharp Edges |
| Supplier | Band Optics Technology |

## What to specify when you request a quote

- **Diameter and flat / notch** — state diameter, flat or notch and their tolerances.
- **Thickness and TTV** — listed as “Customized, From 0.2 to 50mm”; give thickness, its tolerance and total thickness variation.
- **Polish and roughness** — listed as “As required”; specify single- or double-side polish and roughness.
- **Flatness, bow and warp** — listed as “As required”; quote flatness, bow and warp limits.
- **Material grade** — listed as “Glass”; name the grade (JGS1/JGS2, Borofloat 33, alkali-free, sapphire orientation).

## Engineering guides for this part

For material grades and coating options, see [BOROFLOAT 33 & Alkali-Free Glass Wafers: Material Guide](https://machiningglass.com/materials/borofloat-33-alkali-free-glass-wafers-material-guide/). How parts like this are machined and finished is covered in [Glass Wafer Bonding for Microfluidic and MEMS Applications: Process Overview](https://machiningglass.com/capabilities/glass-wafer-bonding-for-microfluidic-and-mems-applications-process-overview/). For an application example, read [Alkali-Free Glass Wafers for Appliance Display Substrates](https://machiningglass.com/applications/alkali-free-glass-wafers-for-appliance-display-substrates/). Before sending a drawing, check [Specifying Coatings for Custom Glass Windows and Substrates](https://machiningglass.com/resources/specifying-coatings-for-custom-glass-windows-and-substrates/). A related standard product is [4-inch Borofloat 33 Glass Wafers](https://machiningglass.com/products/4-inch-borofloat-33-glass-wafers/).

## FAQ

### What is the Customized BOROFLOAT 33 BF33 Optical Wafer Optical Glass Window Substrate made of?

It is listed as Glass. Coating: As required. Other grades can be quoted if your application needs different transmission, thermal or chemical properties.

### What sizes and thicknesses are available?

The listing gives size Customized, From 2mm to 400mm, thickness Customized, From 0.2 to 50mm. Custom outlines and thicknesses are made to drawing; state the tolerance you need.

### Where is this glass wafer used?

Listed applications: Medical, Civil, Labs and Astronomical.

### What should I include in a quote request?

Include diameter and flat / notch, thickness and ttv, polish and roughness, flatness, bow and warp and material grade, plus quantity and a drawing if the part is custom.

## Request a quote

Send drawings, tolerances and quantity: https://machiningglass.com/contact/?rfq_product_id=7357#mg-rfq

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Source: Custom Precision Glass Machining — https://machiningglass.com/