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CF Flanges & Components

Hositrad offers Conflat flanges from CF16 to CF350 in both rotatable and non- rotatable versions.
CF flanges are compatible with other manufacturers’ standards.
Available materials for CF flanges are in SS304, 304L, 304 ESR, 316L, 316LN.
CF flanges utilize an OFHC (Oxygen Free High Conductivity) copper gasket for effective seal up to 1x-11 mbar. The copper gasket can sustain up to 450°C. However, reuse of OFHC copper gaskets is not recommended. For transition from UHV to HV, Hositrad offers complete range of adaptors for CF flanges to  KF or ISO flanges.
You can buy CF components here
Download CF catalog
Standard Specification
Application:
Ultra High Vacuum
Vacuum Range:
1x10-11 mbar
Materials:
304 (1.4301), 304L (1.4306), 
316L (1.4404), 316LN (1.4429)
Gasket Materials:
OFHC Copper or Silver Plated
Flange Sizes:
CF16 – CF350
Temperature Range:
–190°C ~ +450°C
Tube Sizes:
12,7 - 306 mm
 












Cleaning and Packaging

Products with weld joins are 100 percent helium leak tested to assure leak free. To ensure the cleanliness of Hositrad products ready for onsite use, all part are ultrasonically cleaned with de- ionized water, and packaged. Each bag is affixed with a label identifying the component’s part number.

Flange Information
Flange size T D1 C B Holes F G
NW16CF 7,6 34 27 4,4 / M4 6 21,5 18,3
NW35CF 12,7 70 58,7 6,7 / M6 6 48,35 41,9
NW50CF 15.8 85,6 72,4 8,4 / M8 8 61,8 55,6
NW63CF 17,5 113,5 92,1 8,4 / M8 8 82,55 77,2
NW100CF 19,9 151,6 130,3 8,4 / M8 16 120,7 115,3
NW150CF 22,3 202,4 181 8,4 / M8 20 171,5 166,1
NW200CF 24,6 253,2 231,8 8,4 / M8 24 222,35 216,9
NW250CF 26 306 284 8,4 / M8 32 273,2 267
NW300CF 28,4 355,6 325,4 10,5 / M10 30 313,5 307,3
NW350CF 28,5 419,1 388,9 10,5 / M10 36 376,9 370,7
Tube Size Tollerance + 0.1 / + 1
Caption:
B Blank
BD Blank Double - Sided
BDT Blank Double - Sided Tapped
BRT Blank Rotatable Tapped
Fixed 
HT  Half Tapped 
Mitred 
Rotatable 
RT  Rotatable Tapped 
Tapped