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

Zero-Length Reducer ConFlat® (CF) UHV Flanges (Standard): Space-Saving UHV Flange Transitions with Precision Sealing

The Zero-Length Reducer ConFlat® (CF) UHV Flanges (Standard) offered by TFM provide a compact and rigid solution for adapting two different CF flange sizes within ultra-high vacuum (UHV) systems. Designed for installations where axial space is limited, these reducer flanges maintain a zero-length profile, ensuring no additional depth is introduced between joined components.

Each reducer flange is precision-machined from 304L stainless steel and features knife-edge sealing faces, compatible with standard copper gaskets. These standard variants are offered with either through-hole or tapped bolt patterns, depending on the flange size, making them highly versatile for a wide range of system configurations.

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

• Zero Axial Length
  Reduces one CF flange size to another without increasing overall system length, making it ideal for tight UHV setups, stacked assemblies, and compact vacuum chambers.

• Knife-Edge CF Sealing Faces
  Both flange ends are standard ConFlat® (CF) interfaces, delivering leak-tight metal gasket seals with copper gaskets for UHV compatibility down to 10⁻¹⁰ torr.

• Standard Tapped or Through-Hole Designs
  Small flanges typically feature blind tapped bolt holes, while larger ones incorporate through-holes. Reducers where both flanges are of comparable diameter may be double-tapped—designated by part numbers ending in “T.”

• Rigid One-Piece Construction
  Unlike welded or fabricated adapters, these Zero-Length Reducer ConFlat® (CF) UHV Flanges (Standard) are machined from a single solid piece for optimal sealing surface flatness and alignment.

• 304L Stainless Steel Material
  Provides excellent resistance to corrosion, oxidation, and thermal cycling—ideal for use in bakeable UHV systems and cleanroom environments.

Applications:

• Compactly adapting between two CF flange sizes (e.g., CF100 to CF63)

• Reducing chamber or port sizes in UHV systems without extending overall length

• Integrating UHV instrumentation or feedthroughs into tight layouts

• Supporting modular builds, beamlines, and retrofitted vacuum systems

• Compatible with standard copper gaskets and UHV-rated fasteners

TFM also offers metric-tapped variants, rotatable zero-length reducers, and a full line of CF-compatible accessories, including bolt sets, centering rings, and gaskets—giving you full control over your UHV system’s modularity and performance.

Ordering Table