Corning 7056 Borosilicate Glass Viewport - 2.75" CF Flange cf35

Vacuum viewports, or sight glasses, offer a hermetically sealed lens to allow visual access into a vacuum chamber without compromising the integrity of the vacuum. Pfeiffer Vacuum Valves & Engineering offers a complete line of viewports for vacuum chambers with NW, ISO, and CF flanges. These CF flanged viewports are available with fully annealed borosilicate 7056 glass or fused silica to provide a large, distortion-free viewing area at a low cost. Weld stub viewports are available for welding onto new or existing chambers. Our elite team of engineers can custom design, test and manufacture components based on your exact specifications, and our manufacturing processes ensure your viewports parts are of the highest quality.