We supply round sight glass disc with central hole 10.5mm with different material such as soda lime glass, borosilicate glass, aluminosilicate glass, quartz glass etc. to meet different environmental conditions requirement for temperature and pressure. The working temperature varies from 150 °C to 1100 °C.
| Material | Aluminosilicate Glass, Borosilicate Glass, Quartz Glass, Soda Lime Glass |
|---|---|
| Standard | DIN7080, DIN8902 |
| Size | Central hole size 10.5mm, Diameter 10-420mm |
| Thickness | Normal 1-30mm, can up to 1-85mm |
| Edge | Grind or Polish |
Material: soda lime glass, borosilicate glass, aluminosilicate glass, quartz glass optional.
– Soda lime glass: widely available, cheaper, working temperature up to 150 °C, DIN8902.
– Borosilicate glass: particularly suitable for aggressive environments (acids, alkalis, water vapor), working temperature up to 350 °C, DIN7080.
– Aluminosilicate glass: working temperature up to 660 °C.
– Quartz glass: working temperature up to 1100 °C.
Diameter: 10-420mm.
Thickness: 1-30mm
Central hole size: 10.5mm
Other dimensions on request.
Gerneral Toelrance :
Diameter (D):
up to 150mm: ± 0.5 mm
from 150 to 200mm: ± 0.8 mm
over 200 mm: ± 1.0 mm
Thickness (s)：
from 10 to 19 mm：+ 0.5 – 0.25 mm
Flatness (e):
D ≤ 100 mm: 0.05 mm
100 mm < D ≤ 150 mm: 0.08 mm
150 mm < D ≤ 200 mm: 0.12 mm
D > 200 mm: 0.15 mm
Parallelity (p):
D ≤ 100 mm: 0.20 mm
100 mm < D ≤ 200 mm: 0.25 mm
D > 200 mm: 0.30 mm
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