275-150-D 
2.75" OD Conflat Double Sided Bored Blank 
1.50" Tube OD 
0.50" Flange Thickness  (Standard) 
• A: 1.51" 
• B: 0.50" 
• 0.6 lbs. 
 2.75" OD Double-Sided Conflat Flange (CF275)  
DN40CF Double Faced 275 Conflat Bored Blank 
 Knife Edge on Both Sides 
• Del Seal Conflat Flange (CF) Equivalent 
• 304 Stainless 
• 1x10-13 UHV Rating 
• 450 Degree High Temperature Rated 
 2-3/4" OD CF Conflat Flange (CF): 
1/2" Flange Thickness (Thickest) 
• Non-Rotatable 
• 6 Clearance (Thru) Holes 
• 0.265" Bolt Hole Diameter  
  2.75" OD CF Conflat Flange (CFF) Equivalents 
275CF, CF35, CF38, CF40, CF275 
DN35CF, DN40CF, NW35CF 
 Double-Faced Conflat Flanges (CF) 
High Vacuum & Ultra High Vacuum (UHV) Flanges 
 0.50" Flange Thickness (Standard) 
 275-150-D Compare to: DFF275X150 140013  FD-275150  275-150D 5000260