DN200CF 254mm | 10.00" OD ConFlat Flange, 203.2mm | 8.00" ID, Non-Rotatable, Tapped, 304ss

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  • Complies with ISO 3669

  • UHV rated to 1x10-13 Torr mbar

  • High temperature rated to 450°C

  • Rotatable and non-rotatable geometries

  • OFE Copper or optional Fluorocarbon-based fluoroelastomer (FKM / FPM) elastomer gaskets

  • Tapped or clearance bolt holes

  • Compatible with other manufacturers' Conflat® knife-edge flange



  • Flanges               304ss (1.4301) or 316EFR (1.4429 ESU)

  • Gaskets                OFE Copper

  • Bolts                  300 stainless steel and 300ss silver Plated


  • Bolt type              Hexagonal or 12-point head

  • Nut type              Hexagonal or two-hole plate nuts

  • Size                  .312-24 UNF or M8

  • Torque                  15 lb-ft or 20 Nm

Vacuum Range                 1x10-13 Torr or below 10-13 mbar

Temperature Range            -2000C to 4500C

Weight                      20lb or 9kg maximum

Dimensions                    9.97” OD x 7.812” ID; 253.3mm OD x 204.7mm ID maximum

More Information


Weight (lb) 7.50
Material 304SS (1.4301 | UNS S30400) Stainless Steel
Number of Bolt Holes 24
Reference Number F1000800T
Temperature Range -200°C to 450°C
Thread Size 0.312-24 UNF
Vacuum Range 1x10-13 Torr | below 10-13 mbar
Vacuum Series Ultra High Vacuum (UHV)
Bolt Hole Type Tapped
Flange Geometry Non-Rotatable
Flange Size DN200CF 254mm | 10.00" OD
Flange Thread Type UNF
Flange Type ConFlat CF Flange
Internal Diameter (ID) 203.2mm | 8 Inch ID Nominal (8.020")
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