Borosilicate 4.2 Glass
Borosilicate 4.2 material round sight glass, also called circular sight glass, sight glass disc are widely used in Euro and American market. The max working temperature is 100℃ higher than borosilicate 3.3 material.
The round sight glass size can be customized. Thickness range from 1mm to 40mm. Apart from that, we can make holes on the glass according to customers' requirements.
Our borosilicate 4.2 round sight glass meets the requirements of DIN 7080. All the processing and testing are according to DIN7080.
How the round sight glass installed
Common size of borosilicate 4.2 round sight glass
| Glass | |
| Diameter mm | Thickness mm |
| 31.75 | 12.7 |
| 40 | 12 |
| 45 | 10 |
| 45 | 12 |
| 50 | 10 |
| 50 | 12 |
| 60 | 10 |
| 60 | 12 |
| 60 | 15 |
| 63 | 10 |
| 63 | 12 |
| 63 | 15 |
| 70 | 12 |
| 80 | 12 |
| 80 | 15 |
| 80 | 20 |
| 90 | 10 |
| 100 | 10 |
| 100 | 15 |
| 100 | 20 |
| 100 | 25 |
| 110 | 20 |
| 120 | 10 |
| 125 | 15 |
| 125 | 20 |
| 125 | 25 |
| 150 | 15 |
| 150 | 20 |
| 150 | 25 |
| 150 | 30 |
| 170 | 15 |
| 175 | 20 |
| 175 | 25 |
| 175 | 30 |
| 200 | 20 |
Note: Customizing sizes are acceptable.
Advantages
Borosilicate 4.2 round sight glass can bear high temperature and pressure.
Our round sight glass meet the requirements of DIN7080.
Acid and alkali resistant.
We can supply various sizes.
Polishing and grinding edge are both available.
Lead time short because we have enough raw material stocks.
Quality steady because we store one batch raw material for 2 years quantity.
Application
Flange sight glass
Double window sight glass
Industry, petro and chemistry pipe
Boiler
High pressure tanks
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| Glass used in double window sight glass | Glass used in sight glass | Round glass used in flange sight glass | Round glass used in weled sight glass |