120009, Flange, Del-Seal, Conflat Flange, 2.75" x 0.25" (69.85mm x 6.35mm), Rotatable, Tapped, 304ss

Availability: Backordered

This product is currently on back order. Orders are still accepted, but the requested qty will be back ordered.

0 Available
Lead Time:
6 weeks
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  • Complies with ISO 3669 
  • UHV rated to 1x10-13 Torr or 1x10-13 mbar  
  • High temperature rated to 450°C  
  • Rotatable and non-rotatable geometries 
  • OFE copper or optional Viton® elastomer gaskets 
  • Tapped or clearance bolt holes 
  • Compatible with other manufacturers' Conflat® knife-edge flanges


  • Flanges                304ss (1.430I) 
  • Gaskets               OFE copper 
  • Bolts                    300 stainless steel (ss) and 300ss silver-plated 



  • Bolt Type              Hexagonal or 12-point head 
  • Nut Type               Hexagonal or two-hole plate nuts 
  • Size                       .250-28 UNF or M6 
  • Torque                  12 lb-ft or 16 Nm 


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


Temperature range        -200°C to 450°C 


Weight                               .75 lb | 0.34 kg


Dimensions                      2.75 OD x .25 ID maximum | 69.85 mm OD x 6.35 mm ID

120009.stp (124.34 kB)

More Information


Weight 0.750000
Material 304SS (1.4301 | UNS S30400) Stainless Steel
Number of Bolt Holes 6
Thread Size 0.250-28 UNF
Bolt Hole Type Tapped
Flange Geometry Rotatable
Flange Size DN40CF 70mm | 2.75" (2 3/4")
Flange Type Del-Seal CF ConFlat
Internal Diameter (ID) Blank
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