www.foodengineeringmag.com/articles/88713-replacement-gauge-glass
Replacement gauge glass
June 1, 2011
Used in armored liquid level gauges and rectangular sight windows on boilers and process vessels in applications where level indication is required, L.J. Star Ilmadur I-420 replacement gauge glass is manufactured to mil spec. Made from a high-quality formula of borosilicate glass, it provides clarity, high-pressure capability and chemical- and thermal-shock resistance. The glass comes in 3 styles: reflex glass with grooves that make it easier to read water levels; groove-less, non-tinted transparent glass; and high-pressure glass with up to a 0.002 flatness tolerance.
L.J. Star Incorporated; 330-405-3040; www.ljstar.com