Replacement Glass

  • $10.59


Includes: Glass and two EPDM gaskets.

Type: Replacement Glass


  • Glass: Borosilicate   Replacement glass
  • Gasket: EPDM (Standard)

Sight Glass flow indicators provide a full 360° to observe fluid flow in any direction. The Sight Glass flow indicator is ideal for applications where the use of glass is allowable. The Sight Glass Flow Indicators are ideal for high purity applications.

Sight glasses come standard with EPDM gaskets. If you would like silicone gaskets instead, simply add the desired sight glass size to your cart and write a note in the ordering instructions (in the cart) that you would like us to install silicone gaskets instead. There is no extra charge for silicone gaskets. If you would like Viton® gaskets instead of EPDM or silicone, they are available for purchase. Add both the sight glass and Viton® Gasket Kit to your cart, let us know in the ordering instructions, and we'll install it for you.


Stock Status


1" 1 1/2" 2"
2 1/2" 3" 4"


Static Seal: A static seal is located in a groove and has no movement.
Examples: O-rings and Tri-Clamp® fittings gaskets


Static Seal Temperatures

Gasket Properties EPDM VITON
Heat resistant Excellent (275°F) Excellent (400°F)
Cold resistant Good-Excellent (-20°F) Good-Excellent (-30°F)
Steam Good Excellent
Abrasion resistant Good-Excellent  Good
Alkali Good Poor-Good
Acid resistance Good-Excellent  Good
Vegetable oil Good Excellent
Petroleum oil Poor Excellent
Oxonia Good-Excellent  Excellent
Ozone Good-Excellent  Excellent



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