Window Sight Glasses

Reliable level indication and a positive indication when liquid is present

Product Description

Seetru circular window sight glasses are compact low-cost assemblies that provide reliable level indication and positive indication when liquid is present.  These screw-in plugs are fitted with high-quality glass. They are suitable for a wide variety of liquids including water, oils, and lubricants.  They operate at temperatures up to 180°C and pressures up to 24 bar g.

Seetru Circular Window Sight Glasses are, for example, widely used in small chemical storage tanks, compressor crankcases, and other machine housings and have proved to be highly reliable and economical.


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The G32 Quickflex Gauge

Technical Information for the Seetru G32 Quickflex Gauge

  • Maximum Temperature
  • Maximum Pressure
    24 bar
  • Connections
    1/2" BSP/NPT to 2" BSP/NPT Others available on request
  • Body Materials (1)
    Mild steel zinc plated / Stainless steel 316
  • Seal Materials (2)
    Nitrile (up to 120°) / Viton (up to 150°) / Others elastomer seals on request
  • Viewing Window (3)
    Annealed borosilicate heat resisting glass / Toughened soda lime glass.


  • Positive indication when liquid present.
  • Reflector provides visual enhancement of coloured liquids (SG model).
  • Cushioned against shock, the glass window is fully sealed.


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