Kurt J. Lesker F0275X162R Conflat Flange

This high-quality UHV (ultra-high vacuum) ConFlat® (CF) flange from Kurt J. Lesker is designed for precision vacuum and semiconductor systems. With a 2.75″ outer diameter (DN35/40CF), rotatable flange face and 1.62″ C-bore, the F0275X162R flange offers flexibility in system alignment while maintaining the standard CF knife-edge seal interface. Constructed from 304L stainless steel for exceptional vacuum compatibility and low outgassing, this flange features a 0.50″ thickness and six bolt holes on a 2.312″ bolt circle diameter — making it a perfect fit for mid-size vacuum chambers, instrumentation ports, and research apparatus requiring reliable UHV connections.

Key Features:
• CF knife-edge UHV style — standard in research/industrial vacuum systems.
• Rotatable design allows precise orientation of tubing or ports without disassembling the bolt pattern.
• 304L stainless steel material for durability and vacuum compatibility.
• 1.62″ C-bore allows larger internal passage for tubing or instrumentation.
• Six-bolt pattern on 2.312″ bolt circle, standard DN35/40CF interface.

Typical Applications:
• Vacuum chambers and interconnects in research labs (physics, materials science)
• Semiconductor processing or UHV instrumentation
• Analytical equipment, electron microscopy vacuum systems
• Any system requiring a reliable vacuum flange with re-orientation flexibility