Zero-Length Reducer ConFlat® (CF) UHV Flanges (Metric)

Zero-Length Reducer ConFlat® (CF) UHV Flanges (Metric): Compact Metric-Tapped Flange Transitions for UHV Systems

The Zero-Length Reducer ConFlat® (CF) UHV Flanges (Metric) from TFM are precision-engineered to connect two different CF flange sizes while introducing no axial extension to your vacuum system. Designed specifically for ultra-high vacuum (UHV) environments, these zero-length reducers are ideal for applications where space is limited and structural rigidity is critical.

Each reducer flange is manufactured from 304L stainless steel and features knife-edge CF sealing faces, compatible with standard copper gaskets. The metric-tapped holes, indicated by the “M” suffix in part numbers, ensure seamless integration into systems using metric hardware—commonly required in international research facilities and OEM builds.

Key Features of Zero-Length Reducer ConFlat® (CF) UHV Flanges (Metric):

• Zero Axial Length
  Designed to reduce one CF flange size to another without increasing system depth, maintaining a minimal vacuum profile—ideal for tight installations and stacked components.

• Knife-Edge CF Sealing
  Both ends feature standard ConFlat® flanges, utilizing knife-edge metal sealing with copper gaskets for leak-tight UHV performance down to 10⁻¹⁰ torr.

• Metric-Tapped Bolt Holes
  The “M” in part numbers designates metric thread patterns, ensuring compatibility with ISO-standard vacuum hardware and system-wide consistency.

• Rigid, One-Piece Design
  Unlike weld-on reducers or nipple adapters, these zero-length reducers are machined as a single, integral flange, delivering superior alignment and vacuum sealing integrity.

• 304L Stainless Steel Construction
  Resistant to corrosion, outgassing, and high-temperature bake-outs—ensuring reliable long-term performance in high-energy physics, synchrotron, and analytical applications.

Applications:

• Directly adapting CF flanges of different sizes (e.g., CF63 to CF40) without additional system length

• Supporting UHV chambers, beamlines, and spectrometers where axial space is restricted

• Enabling retrofits or modular builds with metric-threaded CF vacuum hardware

• Maintaining rigid, low-profile vacuum interfaces in compact UHV systems

• Ideal for use in European and global labs requiring metric compatibility

TFM also supplies a full range of standard and rotatable CF flanges, straight and conical reducers, gaskets, and UHV-grade bolt sets—ensuring you have everything required for a fully integrated UHV system built to global standards.

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