A4977-1-CF
Crystal Quartz (SiO2) Viewport, UHV Rated Vacuum-Optics, 1.88″ View Dia, 4.50″ Conflat Flange
Crystal Quartz (SiO2) Viewport, UHV Rated Vacuum-Optics, 1.88″ View Dia, 4.50″ Conflat Flange
Crystal Quartz (SiO2) Viewport, UHV Rated Vacuum-Optics, 0.90″ View Dia, 2.75″ Conflat Flange