338-MH4-VE 
3.38" OD Conflat Flange (CF) Series 
4" OAL CF Flexible Metal Hose (Bellows) 
 Vacuum Essential 
• 0.006" Wall Thickness (Thin) 
• 1 Rotatable Conflat Flange 
• 304 Stainless Steel 
• Hydraulically Formed Ultra-High Vacuum (UHV) Bellows 
 3.38" OD CF Conflat Flange 
• Ø2" Hose ID 
• 8 Clearance (Thru) Holes 
• 0.332" Bolt Hole Diameter 
 3-3/8" OD Conflat Flange (CF) Equivalents: 
• 338CF, CF338, DN50CF, NW50CF, 3.375" CFF 
 Images for Reference Only