Optical Glass picture
Home / Products / Technical Glass / Sight Glass Materials

Sight Glass Materials

Specialty Glass for Sight Glass Applications

Sight glasses are usually manufactured from glasses that must not have to offer optical quality. They only have to be clear, in order to allow the visual control and monitoring of processes behind the sight glass. Such glasses can also be used for lighting applications. For example, temperature-resistant sight glasses are frequently taken as front windows for powerful light sources. So, sight glasses generally do not have to have an optical quality. Flatness, parallelism and surface quality do not really matter normally. By that, these materials are more economical than the same glass type with optical quality. Below you will find an overview of our available materials that are suitable for sight glass applications:


Natural Fused Quartz Glass (Sight-Glass Quality)

Natural quartz glass (Fused Quartz) is used, whenever the optical quality, such as flatness, surface quality or homogeneity plays a subordinate role. For example, we manufacture sight glasses, front glasses for hot UV light sources etc. of natural quartz glass. For more demanding applications, our optical quartz glass (fused-silica) is more suitable. more...




If you need glass with more sophisticated optical quality, please take a look at the product categories Sheet-Glass, Thin Glass and Optical Glass.