ConFlat (CF) UV Grade Fused Silica Viewport


  • UV grade fused silica viewport
  • Zero-length profile
  • ConFlat flange
  • UV grade fused silica windows
  • Bakeable to 200°C
  • Non-magnetic materials
  • Excellent transmission for UV to 250nm
  • UHV compatible


  • Flange material
    • 316L stainless steel (1.33”)
    • 304 stainless steel (2.75” to 8.00”)
  • Window material: Corning HPFS 7980 Fused Silica or equivalent
  • TWD < 10λ @ 632nm (peak to valley)
  • Parallelism < 30 arc minutes
  • Surface finish: 40/20 scratch-dig
  • Thermal range: -100°C to 200°C
  • Bake-out ramp rate: 20°C per minute
  • Homogeneity grade: F
  • Inclusion class: 2
  • Leak rate < 1 X 10-9 atm-cc/sec He

Available Options: Call for price and delivery

  • All Titanium Viewports
  • Weld Adapters
  • Re-entrant Designs
  • ISO Flanges
  • AR Coating for 1550nmAR Coating for 808nm
  • Dual AR Coatings
  • EUV Grade (Excimer) Viewports
  • IR Grade (Low OH) Viewports
  • Geochronological Viewports
  • Custom viewports and coatings

*Dimensions are in inches unless otherwise specified

Part IDReference NumberDescription Flange Size View Diameter 3D CADDrawingUnit PriceIn StockQty, Add To Cart
Part ID9118029Reference NumberCF133-ZLVP-Q-UV-0.63Description CF133 UV Grade Fused Silica ViewportFlange Size 1.33View Diameter 0.633D CADLoginDrawingLoginUnit Price$206.155
Part ID9118030Reference NumberCF275-ZLVP-Q-UV-1.40Description CF275 UV Grade Fused Silica ViewportFlange Size 2.75View Diameter 1.43D CADLoginDrawingLoginUnit Price$226.10Contact
Part ID9118033Reference NumberCF338-ZLVP-Q-UV-1.40Description CF338 UV Grade Fused Silica ViewportFlange Size 3.38View Diameter 1.43D CADLoginDrawingLoginUnit Price$251.75Contact
Part ID9118032Reference NumberCF450-ZLVP-Q-UV-2.69Description CF450 UV Grade Fused Silica ViewportFlange Size 4.5View Diameter 2.693D CADLoginDrawingLoginUnit Price$755.25Contact
Part ID9118031Reference NumberCF600-ZLVP-Q-UV-3.88Description CF600 UV Grade Fused Silica ViewportFlange Size 6View Diameter 3.883D CADLoginDrawingLoginUnit Price$897.75Contact
Part ID9118034Reference NumberCF800-ZLVP-Q-UV-5.38Description CF800 UV Grade Fused Silica ViewportFlange Size 8View Diameter 5.383D CADLoginDrawingLoginUnit Price$2,265.75Contact