Apex Vacuum

UV Sapphire NW/QF Viewports


UV Grade Sapphire Viewport, 0.69″ View Dia, 2.16″ Quick Flange

  • Single Crystal UV Grade Sapphire Windows
  • Transmission from 250nm to 5 Microns
  • UHV Compatible

More Information Below.



UV Sapphire viewports come with view diameters up to 3 inches, and are bakeable to 450˚C. Single crystal, sapphire windows come with orientation either 0˚ or 90˚ and provide transmission from 250nm to 4 microns.

  • Flange Material: 304/316 Stainless Steel
  • Surface Finish: 50/20
  • Leak Rate: <2×10(-10) atm cc/sec He
  • Thermal Range: -100°C to 450°C
  • UV Transmission: 50% @ 250nm (external)
  • Orientation: 0°-90

Additional information


0.59" UV Grade, NW16, 0.69" UV Grade, NW25, 0.94" UV Grade, NW25, 0.94" UV Grade, NW40

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