Sight Glasses

The objective of a sight glass is to provide a window into a pressure vessel, a hot temperature or corrosive process environment, for machine vision or live observation. We manufacture and distribute sight glasses, sapphire and quartz windows as well as laser window assemblies. Encole offers stock and custom high pressure sight glasses for energy, food processing and pharmaceutical applications. We also offer sight windows for ultra high vacuum in semiconductor applications. Sight windows available through the catalog cover a broad spectrum of transmitted wavelengths, from infrared to ultraviolet.