CIRCULAR SIGHT GLASS
1，High temperature resistance
Toughened clear borosilicate glass sight glass can work under 400-600℃ continuously,and in short time can even work under 650°C.
2.Corrosion resistant
Except hydrofluoric acid, Quartz Plate Of Optical Grade do not react with any acid and base except hydrofluoric acid.the stability is 30 tims of the ceramic,and 150 times of stainless steel.
3.Stability
Excellent thermal shock stability.
4.Electric insulation
It is 10000 times of usual glass
