Gauge Glass

Find replacement gauge glass and accessories at Our borosilicate glass gauge offers high visual clarity, greater chemical and thermal shock resistance and high pressure safety.



The same commitment to quality the L.J. Star name is known for is now available for all your replacement gage glass and accessories. L.J. Star replacement borosilicate gauge glass is manufactured exclusively to MIL G 16356-D standards. Gauge glass sizes 1 through 9 are stocked and available for immediate delivery with other sizes available upon request.

MAXOS®  gauge glass provides better visual clarity, greater chemical and thermal shock resistance, higher pressure safety factors and is the only gauge glass specifically manufactured to Mil Spec.

L. J. Star’s direct partnership with Ilmadur Glass provides better technical support, custom solutions and customer support. The new state-of-the-art production facility allows for better quality control, which results in the highest quality available. In fact, the new equipment allows for eight times tighter tolerances than the Military Specification requires, resulting in greater pressure capabilities and safety.

Gauge glass gaskets are available for the full range of glass sizes 1 through 9. The most common gasket materials – Non-Asbestos, Gylon®, and Graphite – are in stock for immediate delivery.

L.J. Star is the industry expert in process observation equipment and technology, including a full line of replacement gauge glass and accessories.

Featured Product

LumiStar3000 is the world’s brightest sight glass luminaire: LED luminaire is four times brighter than a typical sight glass light, offering an unprecedented view of processes.

Video - See the World’s Brightest Sight Glass Light

See your process more clearly. Video demonstrates how the LumiStar3000 LED light delivers 4X the brightness of a standard sight glass light. Learn how to meet green initiatives and reduce maintenance costs.

White Paper Illuminates Diffused Light for Vessels

The wrong kind of vessel illumination can reveal what appears to be scratches and contaminants, but aren’t. Learn how to properly apply LED lighting and sleep well tonight.


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