DN100 Vacuum Sight Glass (DN-100 Vacuum Viewport)
DN 100 vacuum sight glass for compact high-vacuum systems. Available in borosilicate, fused silica & sapphire. Quick-fit DN/KF flange with optional AR coatings.
Vacuum Sight Glass
High-clarity viewports engineered for vacuum systems used in semiconductor fabrication, thin-film coating, vacuum furnaces, particle accelerators, cryogenics and R&D labs. Available in borosilicate, quartz and sapphire with CF/ISO/KF flange options. Designed for low outgassing, thermal resistance and superior optical transmission — custom sizes and coatings available for UHV and process-specific needs.
Showing 13–24 of 36 results
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DN125 Vacuum Sight Glass (DN-125 Vacuum Viewport)
DN 125 vacuum sight glass for compact high-vacuum systems. Available in borosilicate, fused silica & sapphire. Quick-fit DN/KF flange with optional AR coatings.
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DN15 Vacuum Sight Glass (DN-15 Vacuum Viewport)
DN15 vacuum sight glass for compact high-vacuum systems. Available in borosilicate, fused silica & sapphire. Quick-fit DN/KF flange with optional AR coatings.
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DN150 Vacuum Sight Glass (DN-150 Vacuum Viewport)
DN 150 vacuum sight glass for compact high-vacuum systems. Available in borosilicate, fused silica & sapphire. Quick-fit DN/KF flange with optional AR coatings.
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DN20 Vacuum Sight Glass (DN-20 Vacuum Viewport)
DN 20 vacuum sight glass for compact high-vacuum systems. Available in borosilicate, fused silica & sapphire. Quick-fit DN/KF flange with optional AR coatings.
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DN200 Vacuum Sight Glass (DN-200 Vacuum Viewport)
DN 200 vacuum sight glass for compact high-vacuum systems. Available in borosilicate, fused silica & sapphire. Quick-fit DN/KF flange with optional AR coatings.
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DN25 Vacuum Sight Glass (DN-25 Vacuum Viewport)
The DN25 vacuum sight glass (DN-25 viewport) is an ultra-compact vacuum optical port designed for small chambers, sample holders and tight-space process equipment. It provides repeatable, reliable optical access for inspection, alignment, laser entry and basic spectroscopy without compromising vacuum integrity.
Constructed with a stainless-steel flange and a vacuum-grade window (borosilicate / fused silica / sapphire), the DN20 viewport is ideal where space is limited but visual or optical access is required. -
DN32 Vacuum Sight Glass (DN-32 Vacuum Viewport)
DN 32 vacuum sight glass for compact high-vacuum systems. Available in borosilicate, fused silica & sapphire. Quick-fit DN/KF flange with optional AR coatings.
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DN40 Vacuum Sight Glass (DN-40 Vacuum Viewport)
DN 40 vacuum sight glass for compact high-vacuum systems. Available in borosilicate, fused silica & sapphire. Quick-fit DN/KF flange with optional AR coatings.
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DN50 Vacuum Sight Glass (DN-50 Vacuum Viewport)
DN 50 vacuum sight glass for compact high-vacuum systems. Available in borosilicate, fused silica & sapphire. Quick-fit DN/KF flange with optional AR coatings.
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DN65 Vacuum Sight Glass (DN-65Vacuum Viewport)
DN 65 vacuum sight glass for compact high-vacuum systems. Available in borosilicate, fused silica & sapphire. Quick-fit DN/KF flange with optional AR coatings.
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DN80 Vacuum Sight Glass (DN-80 Vacuum Viewport)
DN 80 vacuum sight glass for compact high-vacuum systems. Available in borosilicate, fused silica & sapphire. Quick-fit DN/KF flange with optional AR coatings.