Sight Glasses & Instrumentation

Browse Our Catalog of Sight Glasses & Instrumentation

Broad Selection of Sanitary Sight Glasses

Sight glasses provide a clear view of product flow through process lines. Steel & O’Brien offers numerous styles of sight glasses, including a bolt style that can be supplied with a protective acrylic shield to prevent the glass from breaking, and a compact socket head cap screw style.

Our standard sight glasses come with borosilicate glass and are sealed with buna-n gaskets. Other viewport materials, including acrylic and polycarbonate, along with gaskets made of EPDM, Viton™, silicone, and Teflon™ are stocked as well.  Various end configurations are available, including clamp, bevel seat, I-Line, Q-Line and John Perry. 

Sanitary sight glasses are typically used in food and beverage, brewery, tank and winery applications. Steel & O’Brien has a deep inventory of sight glasses that meet or exceed sanitary regulations regarding material finish on the inside and outside diameter. Before we ship them, our sight glasses are marked with the alloy, heat number and size for traceability, then capped and bagged.

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