Round & Rectangular Sight Glass

  • Round Gauge Glass for Observing Liquid Flow and Level

  • Round Gauge Glass for Observing Liquid Flow and Level

  • Round Gauge Glass for Observing Liquid Flow and Level

  • Round Gauge Glass for Observing Liquid Flow and Level

Round Gauge Glass for Observing Liquid Flow and Level

Round sight glass, also called round gauge glass and sight glass disc, commonly uses the material of soda-lime glass, borosilicate glass, aluminosilicate glass and quartz glass. We suggest different material according to environmental conditions, such as temperature, pressure, acid and alkali.



Round sight glass, also called round gauge glass and sight glass disc, commonly uses the material of soda-lime glass, borosilicate glass, aluminosilicate glass and quartz glass. We suggest different material according to environmental conditions, such as temperature, pressure, acid and alkali.


Soda-lime glass working temperature is up to 230 °C, but it is the most inexpensive material. Borosilicate glass is particularly used in aggressive environment, such as acid and alkali. The working temperature is up to 400 °C. Aluminosilicate glass can resist acid and alkali better than borosilicate glass and the working temperature can reach 650 °C. Quartz glass is the best material, whose working temperature can reach 1100 °C.


Round gauge glass is commonly used in industry, chemical, petrol and medicine pipes and flanges for observing the liquid flow and liquid level.


Round glass Data Sheets


Quartz round glass can be processed and produced according to customer requirements, using different materials of JGS1, JGS2 and JGS3.


Round Gauge Glass for Observing Liquid Flow and LevelRound Gauge Glass for Observing Liquid Flow and Level

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