212-025-R 
2.12" OD Bored Blank CF Conflat Flange 
1/4" Bore Size  
• A: 2.12"
• B: 0.25"
• D: 0.47"
• F: 1.625" 
 2.12" OD Conflat Flange (DN25CF): 
• 1/4" Tube OD 
• 4 Clearance (Thru) Holes 
• 0.265" Bolt Hole Diameter 
• Rotatable 
• 304 Stainless 
 2.125" OD Conflat Flange (CFF) Equivalents: 
• CF212, DN25CF, NW25CF, 212CF, 2-1/8" CF 
 High Vacuum and Ultra High Vacuum (UHV) Flanges 
 212-025-R Compare to: F0212X025N  100882011 212-025R 5000047 2.125 inch