APG’s line of flat industrial glass is manufactured from borosilicate which is known for having a very low coefficient of thermal expansion and thus is more resistant to thermal shock than other glasses.
APG’s tubular gage glass is offered in red-line, standard, heavy-wall, high-pressure, and heavy wall red-line configurations. APG can custom fabricate any length and end finish including cut, ground, or fire-polished depending on your application.
APG offers 3/4 inch annular edge mold finished glass for low-pressure service. Annular edge glass has a 1/2 inch wide gasket surface and provides optical clarity and increased thermal shock resistance for operators. Annular edge glass is offered in both annealed and tempered styles.
APG’s glass is designed to let your technicians and operators see directly into the vessel and observe the liquid level and conditions in your configuration. The ribbed sides allow for a better look without the light refracting off the material.