Conflat Flange 1.33 in. (CF) Demountable Viewport, Uncoated Glass, 0.56 in. view diameter. These conflat demountable vacuum fittings have a flange size of ConFlat (CF) 1-1/3 inch with a glass viewport view diameter of .56 in and a glass thickness of 0.158. Demountable Viewports are used for ultra-high vacuum applications and molecular spectroscopy. These fittings use a Viton O-ring gasket, operate down to 10-8 torr (10-11 Pa), and have a max bakeout temperature of 150° C. The operable wavelength of the uncoated glass is between 350nm to 2100nm. This is a glass lens but other coated quartz fused silica is available. Fused silica is for all but the most demanding optical applications. They are preferred over glass viewports because of their transparency to UV ultraviolet radiation. We carry Uncoated and Coated UV viewports and replacement fused silica lenses. See middle graphic chart above for the different light transmissions for this glass lens. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. At present we have the following demountable viewport sizes listed in the graphic below and have replacement viewport glass and O-rings for sale.

Replacement Glass for Demountable Viewport with No BBAR (Broadband Anti Reflective) Coating for CF1.33 Viewports, 0.56 in. view area. These Glass Replacement viewports fit our CF1.33 Demountable Viewports. View diameter of 0.56. Glass Thickness 0.159, No Coating, Max Bake Temperature: 150°C, Operating Wavelength: 350nm~1500nm. Accu-Sol glass is an economical replacement for Corning type 7056 glass. This high transmission glass has a 90% transmission from 350 to 2100 nm wavelength range and greater than a 80% transmission from 2100 to 2680 nm wavelength range. Removal of the glass is possible if one wants to apply optical coatings. A Replacement Quartz Fused Silica Glass is also offered for selected transmission wavelength ranges.

CF 1.33 in. Replacement O-Ring for Demountable Viewport, View Diameter 0.56 in., Viton Viton Replacement O-Ring for Demountable Viewports. CF 1.33 in., View Diameter 0.56 in., Bakeable up to 150°C.

CF 1.33 in. Replacement O-Ring for Demountable Viewport, View Diameter 0.56 in., Kalrez Kalrez 4079 Replacement O-Ring for Demountable Viewports. CF 1.33 in., View Diameter 0.56 in., Bakeable up to 250°C.

Conflat Flange 2.75 in. (CF) Demountable Viewport, 1.19 in. view diameter, Uncoated Glass.These conflat demountable vacuum fittings have a flange size of ConFlat (CF) 2.75 inch with a glass viewport view diameter of 1.19 in and a glass thickness of 0.158". Demountable Viewports are used for ultra-high vacuum applications and molecular spectroscopy. These fittings use a Viton O-ring gasket, operate down to 10-8 torr (10-11 Pa), and have a max bakeout temperature of 150° C. The operable wavelength of the glass is between 350nm to 1500nm. North American flange sizes are given by flange outer diameter in inches: 1-1/3 ("mini conflat"), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel. At present we have the following demountable viewport sizes listed in the graphic below and have replacement viewport glass and O-rings for sale.

Conflat Flange 2.75 in. (CF) Demountable Viewport, 1.19 in. view diameter, Uncoated Quartz Fused Silica These conflat demountable vacuum fittings have a flange size of (CF) 2.75 inch with a Uncoated Quartz Fused Silica viewport, view diameter of 1.19 in and a glass thickness of 0.158. Demountable Viewports are used for ultra-high vacuum applications and molecular spectroscopy. These fittings use a Viton O-ring gasket, operate down to 10-8 torr (10-11 Pa), and have a max bakeout temperature of 150° C. The operable wavelength of the Uncoated Quartz is between 200nm to 2000nm. Other coated quartz fused silica is available. Fused silica is for all but the most demanding optical applications. They are preferred over glass viewports because of their transparency to UV ultraviolet radiation. We carry Uncoated and Coated UV viewports and replacement fused silica lenses. See middle graphic chart above for the different light transmissions for each coated fused silica. These vacuum fittings are made of corrosive resistant stainless steel. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250.

Conflat Flange 2.75 in. (CF) Demountable Viewport, 1.19 in. view diameter, UV Coated Quartz Fused Silica These conflat demountable vacuum fittings have a flange size of (CF) 2.75 inch with a UV Coated Quartz Fused Silica viewport, view diameter of 1.19 in and a glass thickness of 0.158. Demountable Viewports are used for ultra-high vacuum applications and molecular spectroscopy. These fittings use a Viton O-ring gasket, operate down to 10-8 torr (10-11 Pa), and have a max bakeout temperature of 150° C. The operable wavelength of the Coated Quartz is between 290nm to 370nm. Other coated quartz fused silica is available. Fused silica is for all but the most demanding optical applications. They are preferred over glass viewports because of their transparency to UV ultraviolet radiation. We carry Uncoated and Coated UV viewports and replacement fused silica lenses. See middle graphic chart above for the different light transmissions for each coated fused silica. These vacuum fittings are made of corrosive resistant stainless steel. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250.

Conflat Flange 2.75 in. (CF) Demountable Viewport, 1.19 in. view diameter, Type A Coated Quartz Fused Silica These conflat demountable vacuum fittings have a flange size of (CF) 2.75 inch with a Type A Coated Quartz Fused Silica viewport, view diameter of 1.19 in and a glass thickness of 0.158. Demountable Viewports are used for ultra-high vacuum applications and molecular spectroscopy. These fittings use a Viton O-ring gasket, operate down to 10-8 torr (10-11 Pa), and have a max bakeout temperature of 150° C. The operable wavelength of the Type A Quartz is between 350nm to 700nm. Other coated quartz fused silica is available. Fused silica is for all but the most demanding optical applications. They are preferred over glass viewports because of their transparency to UV ultraviolet radiation. We carry Uncoated and Coated UV viewports and replacement fused silica lenses. See middle graphic chart above for the different light transmissions for each coated quartz fused silica. These vacuum fittings are made of corrosive resistant stainless steel. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250.

Conflat Flange 2.75 in. (CF) Demountable Viewport, 1.19 in. view diameter, Type B Coated Quartz Fused Silica These conflat demountable vacuum fittings have a flange size of (CF) 2.75 inch with a Type B Coated Quartz Fused Silica viewport, view diameter of 1.19 in and a glass thickness of 0.158. Demountable Viewports are used for ultra-high vacuum applications and molecular spectroscopy. These fittings use a Viton O-ring gasket, operate down to 10-8 torr (10-11 Pa), and have a max bakeout temperature of 150° C. The operable wavelength of the Type B Quartz is between 650nm to 1050nm. Other coated quartz fused silica is available. Fused silica is for all but the most demanding optical applications. They are preferred over glass viewports because of their transparency to UV ultraviolet radiation. We carry Uncoated and Coated UV viewports and replacement fused silica lenses. See middle graphic chart above for the different light transmissions for each coated quartz fused silica. These vacuum fittings are made of corrosive resistant stainless steel. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250.

Conflat Flange 2.75 in. (CF) Demountable Viewport, 1.19 in. view diameter, Type C Coated Quartz Fused Silica These conflat demountable vacuum fittings have a flange size of (CF) 2.75 inch with a Type C Coated Quartz Fused Silica viewport, view diameter of 1.19 in and a glass thickness of 0.158. Demountable Viewports are used for ultra-high vacuum applications and molecular spectroscopy. These fittings use a Viton O-ring gasket, operate down to 10-8 torr (10-11 Pa), and have a max bakeout temperature of 150° C. The operable wavelength of the Type C Quartz is between 1050nm to 1620nm. Other coated quartz fused silica is available. Fused silica is for all but the most demanding optical applications. They are preferred over glass viewports because of their transparency to UV ultraviolet radiation. We carry Uncoated and Coated UV viewports and replacement fused silica lenses. See middle graphic chart above for the different light transmissions for each coated quartz fused silica. These vacuum fittings are made of corrosive resistant stainless steel. North American flange sizes are given by flange outer diameter in inches: 1-1/3 (mini conflat), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250.

Replacement Glass for Demountable Viewport with No BBAR (Broadband Anti Reflective) Coating for CF 2.75 Viewports, 1.19 in. view area. These Glass Replacement viewports fit our CF 2.75 Demountable Viewports. View diameter of 1.19. Glass Thickness 0.159, No Coating, Max Bake Temperature: 150°C, Operating Wavelength: 350nm~1500nm.

Replacement Quartz (fused silica) for Demountable Viewport CF 2.75, 1.19 in. view area, Uncoated for 350nm~2000nm. These Quartz (fused silica) Replacement viewports fit our CF 2.75 Demountable Viewports. View diameter of 1.19. Glass Thickness 0.158, UNCOATED, Max Bake Temperature: 150°C, Operating Wavelength: 350nm~2000nm.

Replacement Quartz (fused silica) for Demountable Viewport CF 2.75, 1.19 in. view area, UV coated for 290nm~370nm. These Quartz (fused silica) Replacement viewports fit our CF 2.75 Demountable Viewports. View diameter of 1.19. Glass Thickness 0.158, UV Coating, Max Bake Temperature: 150°C, Operating Wavelength: 290nm~370nm.

Replacement Quartz (fused silica) for Demountable Viewport CF 2.75, 1.19 in. view area, Type A coated for 350nm~700nm. These Quartz (fused silica) Replacement viewports fit our CF 2.75 Demountable Viewports. View diameter of 1.19. Glass Thickness 0.158, Type A Coating, Max Bake Temperature: 150°C, Operating Wavelength: 350nm~700nm.

Replacement Quartz (fused silica) for Demountable Viewport CF 2.75, 1.19 in. view area, Type B coated for 650nm~1050nm. These Quartz (fused silica) Replacement viewports fit our CF 2.75 Demountable Viewports. View diameter of 1.19. Glass Thickness 0.158, Type B Coating, Max Bake Temperature: 150°C, Operating Wavelength: 650nm~1050nm.

Replacement Quartz (fused silica) for Demountable Viewport CF 2.75, 1.19 in. view area, Type C coated for 1050nm~1620nm. These Quartz (fused silica) Replacement viewports fit our CF 2.75 Demountable Viewports. View diameter of 1.19. Glass Thickness 0.158, Type C Coating, Max Bake Temperature: 150°C, Operating Wavelength: 1050nm~1620nm.

CF 2.75 in. Replacement O-Ring for Demountable Viewport, View Diameter 1.19 in., Viton Viton Replacement O-Ring for Demountable Viewports. CF 2.75 in., View Diameter 1.19 in., Bakeable up to 150°C.

CF 2.75 in. Replacement O-Ring for Demountable Viewport, View Diameter 1.19 in., Kalrez Kalrez 4079 Replacement O-Ring for Demountable Viewports. CF 2.75 in., View Diameter 1.19 in., Bakeable up to 250°C.