# Pyrex Borosilicate 3.3 Glass Explosion Proof Tube

> Pyrex Borosilicate 3.3 Glass Explosion Proof Tube — a precision glass tube / rod: Glass. Specs, RFQ checklist and custom sizes to drawing.

- Page: https://machiningglass.com/products/pyrex-borosilicate-3-3-glass-explosion-proof-tube/
- SKU: MG-1AD77D
- Category: Laboratory & Analytical Glass > Precision Glass Capillaries, Tubes & Rods
- Image: https://machiningglass.com/wp-content/uploads/2026/10/Pyrex-Borosilicate-3-3-Glass-Explosion-Proof-Tube.webp
- Updated: 2026-10-24

Product type: Glass Tube, Glass Tube. Application: Indutrial, Indutrial. Model: JSV-BGT.

## Overview

The Pyrex Borosilicate 3.3 Glass Explosion Proof Tube is supplied as a precision glass tube / rod made from Glass. Listed geometry: round shape. Typical applications: Indutrial. 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 | Glass Tube, Glass Tube |
| Shape | Round |
| Application | Indutrial, Indutrial |
| Model NO. | JSV-BGT |
| Glass Type | Hollow Glass, Hollow Glass |
| Recycled | Recycled |
| Flexibility | Hard |
| Logo Printing | with or Without Logo |
| Technics | Fused Glass |
| Processing | Cutting, Fire Polishing, Sealing |
| Workable | Blown and Pressed |
| Color | Transparent, Transparent, Clear |
| Physical Data | 1 |
| Data | 1 |
| Supplier | Jinan JSV Industrial Co., Ltd. |

## Technical data

| Parameter | Value |
| --- | --- |
| Product Name | Borosilicate 3.3 glass tube |
| Size | Outside diameter from 3mm to 400mm |
| Processing | Cutting, grinding, polishing, fire polishing, annealing, drilling, sandblasting, coating, sealing, Joining, bending, blowing, pressing |
| Shape | Round, triangle, hexagonal, inner profile, half-cylinder |
| Packing | Carton, pallet, wooden crate |

|   |   |   |   |
| --- | --- | --- | --- |
| 1 | Coefficient of mean linear thermal expansion (20ºC~310ºC) | 3.3 | 10-6K-1 |
| 2 | Density | 2.23 | g/cm3 |
| 3 | Transformation temperature | 525 | °C |
| 4 | Softening Point | 820 | °C |
| 5 | Working Point | 1250 | °C |

|   |   |   |   |
| --- | --- | --- | --- |
| 1 | Hydrolytic resistance (ISO 719) | ISO 719 | HGB 1 |
| 2 | Acid resistance | DIN 12116 | S 1 |
| 3 | Alkali resistance | ISO 695 | A 2 |

## What to specify when you request a quote

- **Material** — listed as “Glass”; name the glass (borosilicate 3.3, quartz, soda-lime).
- **OD, ID and wall** — listed as “JSV-BGT”; give outer and inner diameter or wall and their tolerances.
- **Length and ends** — give length, end finish and any closed or flared ends.
- **Straightness and bore** — state straightness and bore tolerance for precision tubing.

## Engineering guides for this part

For material grades and coating options, see [Borofloat 33 Glass: Material Selection for Precision Substrates](https://machiningglass.com/materials/borofloat-33-glass-material-selection-for-precision-substrates/). How parts like this are machined and finished is covered in [Precision Bore Glass Tubing Processing: End-to-End Manufacturing for Industrial Buyers](https://machiningglass.com/capabilities/precision-bore-glass-tubing-processing-end-to-end-manufacturing-for-industrial-buyers/). For an application example, read [Borosilicate Glass Wafers for Appliance Sensors: Reliability in Harsh Conditions](https://machiningglass.com/applications/borosilicate-glass-wafers-for-appliance-sensors-reliability-in-harsh-conditions/). Before sending a drawing, check [Precision Glass Material Selection: Fused Silica vs Borosilicate & More](https://machiningglass.com/resources/precision-glass-material-selection-fused-silica-vs-borosilicate-more/). 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 Pyrex Borosilicate 3.3 Glass Explosion Proof Tube made of?

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

### Where is this precision glass tube / rod used?

Listed applications: Indutrial.

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

Include material, od, id and wall, length and ends and straightness and bore, 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=6467#mg-rfq

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