• sight glass indicator

    The strongest, most secure sanitary sight glass indicator available, Viewport's mechanically prestressed windows are available in a sanitary clamp design for sight ports in processing applications or inline visual flow indicators.

  • Non-Caged FEP Sight Gauge

    TEMPERATURE: -25°F to 300°F
    END CONNECTIONS: 316L stainless steel sanitary Tri-Clamp®.
    Consult factory for other end connection options.

  • glass sight gauges

    Rubber Fab's PSSG Sight Gauge is a light weight Polysulfone Sight Gauge. It's perfect surface connection prevents bacteria from getting trapped.

    TEMPERATURE: -20°F to 240°F

    • Tri-Clamp®



  • reinforced sight gauge

    Rubber Fab's Caged FEP Sight Gauge is constructed for high pressure applications. It is sturdy which makes it favorable for high stress applications and will not impart taste or odor. The CSG Sight Glass has a smooth, non-stick surface which cleans easily and promotes minimal pressure drop.

    TEMPERATURE: -25°F to 300°F
    END CONNECTIONS: 316L stainless steel sanitary Tri-Clamps®


  • RubberFab sight gauge

    Rubber Fab's Bolted Sight Gauge provides fast, continuous inspection from all angles. It is available with either borosilicate or acrylic inserts and includes a buna gasket.

    TEMPERATURE: Temperature rating for the borosilicate insert is dependent on temperature rating of gasket used in fitting connection. RFBSG comes standard with buna gasket and a temperature rating of 250˚.
    Borosilicate Insert: 250˚F
    Acrylic Insert: 180˚F

  • Acrylic End Caps

    Rubber Fab's end caps are available in either Acrylic or Lexan and come in Bevel Seat or I-Line Style.

  • Polysulfone End Caps

    Rubber Fab's polysulfone end caps are available in Bevel Seat or I-Line style. They are also available in Lexan.