CF Vacuum Flange CF100

CF Vacuum Flange CF100

Supplier
Fiberock
Part Number
CF100
Category
Optical Cells
Origin
China

CF, or Conflat Flange, is a high-vacuum connection using static metal seals and capable of high-temperature bakeout2. Pressure ranges from a minimum <10-12 hPa to ambient. Nominal diameters include 16, 40, 63, 100, 160, 200, 2502. Applicable vacuum reaches 10^-12 mbar2. Seal materials are generally Viton, PTFE, or oxygen-free copper; flanges generally use 304 or 316 stainless steel. Fixed flanges are one-piece. Loose/rotatable flanges comprise a knife edge compressing copper gaskets and a bolt-retaining section. Through-holes require bolts and nuts; threaded holes accept bolts directly. Main materials are SUS304 or SUS304L because SUS304 outgasses little and is readily machined/welded. Installation is demanding. Copper gaskets deform under compression, so tighten bolts evenly. Uneven forces lift diagonally opposite flange areas and cause leakage. Approximate torques: M4: 20kgf·cm; M6: 70kgf·cm; M8: 100kgf·cm. Genderless CF flanges and copper gaskets are all metal and withstand bakeout above 250℃. Disadvantages are high cost and nonreusable copper gaskets. CF series: readily recognizable seals mainly serve ultrahigh vacuum, using copper-gasket metal sealing. After one use, gasket sealing deteriorates substantially; high-vacuum systems require gasket replacement after every disassembly. Standard sizes such as CF35 and matching standard copper gaskets are available.

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Overview

CF, or Conflat Flange, is a high-vacuum connection using static metal seals and capable of high-temperature bakeout2. Pressure ranges from a minimum <10-12 hPa to ambient. Nominal diameters include 16, 40, 63, 100, 160, 200, 2502. Applicable vacuum reaches 10^-12 mbar2. Seal materials are generally Viton, PTFE, or oxygen-free copper; flanges generally use 304 or 316 stainless steel. Fixed flanges are one-piece. Loose/rotatable flanges comprise a knife edge compressing copper gaskets and a bolt-retaining section. Through-holes require bolts and nuts; threaded holes accept bolts directly. Main materials are SUS304 or SUS304L because SUS304 outgasses little and is readily machined/welded. Installation is demanding. Copper gaskets deform under compression, so tighten bolts evenly. Uneven forces lift diagonally opposite flange areas and cause leakage. Approximate torques: M4: 20kgf·cm; M6: 70kgf·cm; M8: 100kgf·cm. Genderless CF flanges and copper gaskets are all metal and withstand bakeout above 250℃. Disadvantages are high cost and nonreusable copper gaskets. CF series: readily recognizable seals mainly serve ultrahigh vacuum, using copper-gasket metal sealing. After one use, gasket sealing deteriorates substantially; high-vacuum systems require gasket replacement after every disassembly. Standard sizes such as CF35 and matching standard copper gaskets are available.

Specifications

ParameterValue
Flange Outer Diameter152.00 mm
Flange Thickness20.00 mm
Bolt Circle Diameter130.00 mm
Bolt Hole Quantity and Dimensions16-8.4 mm

Key Features

Material: generally stainless steel, which can be baked at high temperature for outgassing as required for high vacuum. Sealing: CF flanges create airtight seals with metal gaskets, usually copper, compressed by screws between the flanges. Temperature and pressure: usable across broad ranges, especially under high vacuum. Reuse: metal gaskets can be reused if undamaged, although replacement after each disassembly and reassembly is common practice to ensure proper sealing. Flatness and cleanliness: sealing surfaces must be very flat and clean for a good seal.

Datasheet

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Supplier Information

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Fiberock
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Qinhuangdao Guangyan Technology Co., Ltd. (FIBEROCK), located in the Economic and Technological Development Zone, Qinhuangdao, Hebei Province, is a high-tech enterprise focusing on optical fibers, crystal materials, and optical components. The company integrates R&D, production, sales and service, specializing in specialty optical fibers and devices. Its products are widely used in medical treatment, fiber sensing, environmental monitoring equipment, biochemical analytical instruments, laser processing and other fields. The company has advanced specialty fiber drawing production lines and medical-grade clean workshops, and has passed ISO9001 quality system certification.

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CF Vacuum Flange CF100
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