Apex Vacuum

UV Fused Silica Viewports Weldable


UV Grade Fused Silica Viewport, 1.37″ View Dia, 1.50″ Dia Stainless Steel Weld Adapter

  • UV Grade Fused Silica Windows
  • Bakeable to 200 degrees C
  • Non-magnetic Materials
  • Transmission for UV to 250nm
  • Compatible with UHV

More Information Below.



Fused Silica Viewports are available with diameters up to 8 inches and include zero length designs for low profile applications. These are all bakeable to 200˚C.

  • Flange Material: 304/316 Stainless Steel
  • Surface Finish: 40/20
  • Leak Rate: <2×10(-10) atm cc/sec He
  • Thermal Range: -100°C to 200°C
  • Transmission: >90% @ 250nm (external)

Additional information


1.37" UV Grade, 2.37" UV Grade, 3.84" UV Grade, 7.78" UV Grade