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Flex Metal Bellows – Edge Welded with CF Flanges

CF Flanged Edge-Welded Bellows for UHV Systems

We produce CF flanged edge-welded bellows for ultra-high vacuum (UHV) systems using durable 347 stainless steel hoses paired with 304L stainless steel knife-edge (ConFlat) flanges. Unlike hydraulically formed metal hoses, edge-welded bellows offer superior flexibility and naturally return to their original length—typically halfway between their extended and compressed states—when not subjected to vacuum conditions. The CF flange is the industry standard for high vacuum and UHV applications, providing compatibility with various gauges, instruments, accessories, and feedthroughs.

Key Features of Edge-Welded Bellows

  • Exceptional flexibility
  • Automatic spring-back to natural length when vacuum is not applied
  • Maximum bakeout temperature of 250°C for stainless steel

Ordering Table

Drawing FlangeSize BellowsOD BellowsID Length(extended) Length(compressed) Part Number
Tooltip 1-1/3" 0.75 0.25 1.37 1 MEW0750251C1
Tooltip 1-1/3" 1.03 0.55 1.34 1 MEW1030551C2
Tooltip 1-1/3" 1.03 0.55 1.84 1.5 MEW1030551C3
Tooltip 2-3/4" 1.5 0.96 1.85 1.4 MEW1500961C1
Tooltip 2-3/4" 1.89 1.39 2.02 1.45 MEW1891391C2
Tooltip 2-3/4" 1.89 1.39 2.62 2.05 MEW1891391C3
Tooltip 3-3/8" 2 1.25 2.47 1.84 MEW2001251C1
Tooltip 2-3/4" 2.25 1.5 2.07 1.44 MEW2251501C2
Tooltip 2-3/4" 2.25 1.5 2.67 2.04 MEW2251501C3
Tooltip 4-1/2" 2.75 1.75 2.89 2.04 MEW2751751C1
Tooltip 3-3/8" 3 2 2.75 1.9 MEW3002001C2
Tooltip 3-3/8" 3 2 3.35 2.5 MEW3002001C3
Tooltip 4-1/2" 3.5 2.5 2.89 2 MEW3502501C2
Tooltip 4-1/2" 3.5 2.5 3.49 2.6 MEW3502501C3
Tooltip 6" 4.97 4 3.94 3.04 MEW4974001C3
Tooltip 8" 7.5 6 4.6 3.26 MEW7506001C3
Tooltip 10" 9.8 8.8 4.13 3.32 MEW9508501C3

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FAQ

Sputtering targets are materials used in thin-film deposition processes to create coatings on substrates. They are used in industries like semiconductors, optics, photovoltaics, and electronics.

Evaporation materials are used in Physical Vapor Deposition (PVD) processes, where materials are heated and evaporated to form a thin film on a substrate. These are critical for applications in optics, wear protection, and decorative coatings.

Boat crucibles are used as containers for evaporation materials during PVD processes. They help to uniformly evaporate materials onto the substrate for thin film formation.

Sputtering uses energetic particles to eject material from a target, while evaporation involves heating a material until it vaporizes and deposits on a substrate. Both are common methods in Physical Vapor Deposition (PVD) for creating thin films.

Consider the material composition, purity, target size, and application-specific requirements such as the thickness and uniformity of the film.

Yes, we offer customized sputtering targets, evaporation materials, and crucibles to meet specific customer requirements for size, material composition, and purity.

Yes, we can assist in selecting the most suitable material based on your application, whether it’s for optical coatings, semiconductor fabrication, or decorative finishes.

Yes, we offer both bulk and small quantities of sputtering targets, evaporation materials, and spherical powders to support research, prototyping, and development projects.

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