SERIES G13

MOLDED GLASS DISCS

Glass Applications

  • Sight Windows
  • Flow Indicators
  • Observation Equipment

Maxos® 8488 Molded replacement glass has outstanding Quality and Clarity characteristics

It has a standard thickness of 3/4″ and is made of borosilicate

Also referred to as Annular Edge glass when Corning Glass manufactured it.

StyleMaxos PNCorning PNDiameterThicknessPSIGTemp.

540-1


540-2


540-3


540-4


540-5

754000L


755000L


756000L


756750L


758375L

695620


695610


692540


694790


694800

4”


5”


6”


6-3/4”


8-3/8”

3/4"

150


100


60


45


30

400°F

541-1


541-2


541-3


541-4


541-5

754000H


755000H


756000H


756750H


758375H

754000H


755000H


756000H


756750H


758375H

4”


5”


6”


6-3/4”


8-3/8”

3/4"

450


300


180


135


90

500°F

Style 540 – Annealed Borosilicate
For lower pressure applications

Style 541 – Tempered Borosilicate
For higher pressure applications
Application Notes

  • Steam Service: Requires Mica protection
  • Vacuum Service: Acceptable with properly designed equipment and sealing
  • Compatibility: Before ordering, verify that the glass is compatible with the design, media(s), cleaning solutions, and the environment of the application and future applications. The John C. Ernst Co. does not make compatibility recommendations. Compatibility determinations, corrosion or otherwise, are the responsibility of the user.

Some medias reduce the useful life of gauge glass by chemical action, such as Hydrofluoric Acid (HF), hot concentrated Phosphoric Acid (H3PO4), Sodium Hydroxide (NaOH) and Potassium Hydroxide (KOH) above 125°F, steam or superheated water above 250°F. Alkaline solutions attach glass very slowly at room temperatures, but as temperature is increased over 100°F, the corrosion rate rises rapidly. Steam can etch or glass thus weaken the glass.

Warning WARNING: This product can expose you to certain chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov

Model Number Matrix
Model Number Matrix