Fused Quartz Sight Glass, Round Ground & Polished Disc

Description

The Fused Quartz Sight Glass, also known as a quartz viewing window, fused silica sight glass or laboratory quartz window, is designed to provide visual access to processes taking place inside compatible laboratory and industrial equipment. Manufactured from transparent fused quartz, these round sight glass discs combine optical transparency with the thermal properties of silica-based glass. Their construction makes them suitable for applications where clear observation and resistance to elevated temperatures are required. Each sight glass features ground and polished surfaces, providing a finished circular plate suitable for use in compatible laboratory viewing assemblies. The polished surfaces support visual observation of processes, materials and equipment interiors.

The range includes five available diameters: 38 mm, 50 mm, 75 mm, 100 mm and 150 mm. The 38 mm variation has a thickness of 3 mm, while the 50 mm, 75 mm, 100 mm and 150 mm variations have a thickness of 1 mm. These dimensional options allow laboratories to select a suitable fused quartz disc according to the opening size, mounting arrangement and intended application. The sight glass diameter and thickness should be checked against the equipment manufacturer’s requirements before installation. Fused quartz has a low coefficient of thermal expansion, providing resistance to thermal shock during suitable heating and cooling conditions. This makes it useful for laboratory viewing applications where temperatures may vary during experimental or industrial processes.

The material also offers chemical resistance to many laboratory substances, supporting use in compatible chemical processing and analytical environments. However, fused quartz is not resistant to every chemical, and compatibility must be verified for the specific substances and operating temperatures involved. These round quartz sight glasses may be used as viewing components in compatible chemical reactors, laboratory furnaces, processing chambers and observation assemblies. Their transparent construction allows operators to observe changes in samples and materials without opening the equipment, provided the window is installed in a suitably designed enclosure. For reliable operation, the sight glass must be installed using a compatible mounting system. Appropriate seals, gaskets and mechanical supports may be required depending on the equipment design. The supplied dimensions alone do not establish suitability for pressurised vessels, vacuum chambers or particular operating temperatures.

Safety Precautions: Inspect each quartz disc for scratches, cracks or edge damage before installation. Avoid excessive mechanical stress and direct contact with hydrofluoric acid or incompatible alkaline substances. Confirm the operating temperature, pressure differential and mounting requirements before use. Each selected variation is supplied as one Fused Quartz Sight Glass in the chosen diameter and thickness. Mounting frames, seals, gaskets and additional equipment accessories are not included unless specified separately.

LabChoice Australia supplies fused quartz sight glasses, laboratory quartz ware and specialised glass components for chemistry laboratories, research institutions, universities, industrial testing facilities and materials science applications requiring transparent viewing components.