Specializing in standard, custom, and modified Glass to Metal seals.

CF Flanges

Larson Electronic Glass’s industry standard CF-type UHV flanges offer reliable sealing performance as result of the design geometry which “captures” the gasket material.

These CF flanges have a conical sealing edge that is pressed into the top and bottom surfaces of an OFHC copper gasket, a lateral cold flow of the gasket occurs. This cold flow is limited by the vertical flange wall. Further material flow is severely limited and high interface pressures are developed. These pressures cause gasket material to fill surface imperfections and produce a highly reliable seal. At high temperatures, the “capturing” geometry maintains high pressure despite of the gasket material softening.

Features:

  • Identical mating flanges - neither male nor female.
  • Mate with all other CF Conflat® flanges of the same size regardless of manufacturer
  • Easy repeated sealing
  • Leak tight even with minor nicks and scratches on gasket
  • Feedthroughs and other components can be welded or brazed to flanges
  • Available as blank, or bored to accept standard tube sizes
  • Copper gaskets, Viton® gaskets, and silver-plated bolt sets are offered

Request a quote on CF flanges for your UHV application, or contact Larson Electronic Glass for more information.

Larson Electronic Glass offers CF flanges available 1.33" diameter to 10" diameter in blank and various bore sizes.

 
 *Please select the quantity for each item you wish to order and click the 'Add To Quote' button below.
 
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Diameter (A):   Mating tube size (D):   Reset
Image
Name
Model
Diameter (A)
Bolt circle (B)
Thickness (C)
Mating tube size (D)
Height (E)
Price


Add Qty.
1.33" CF Flange Blank  1.33" CF Flange Blank  911101  1.33"
1.06"
.28"/.30"
-
-
17


1.33" CF Flange 3/4" Neck  1.33" CF Flange 3/4" Neck  911201  1.33"
1.06"
.28"/.30"
3/4"
.560"
17


1.33" CF Flange 3/4" Bored  1.33" CF Flange 3/4" Bored  911301  1.33"
1.06"
.28"/.30"
3/4"
-
22


2-3/4" CF Flange Blank  2-3/4" CF Flange Blank  911102  2.73"
2.312"
.500"
-
-
25


2-3/4" CF Flange Bored  2-3/4" CF Flange Bored  911202  2.73"
2.312"
.500"
1-1/2"
-
25


3-3/8" CF Flange Blank  3-3/8" CF Flange Blank  911103  3.37"
2.850"
.625"
-
-
56


3-3/8" CF Flange Bored  3-3/8" CF Flange Bored  911203  3.37"
2.850"
.625"
2"
-
56


4-1/2" CF Flange Blank  4-1/2" CF Flange Blank  911104  4.47"
3.628"
.680"
-
-
78


4-1/2" CF Flange Bored  4-1/2" CF Flange Bored  911204  4.47"
3.628"
.680"
2-1/2"
-
78


4-5/8" CF Flange Blank  4-5/8" CF Flange Blank  911105  4.62"
4.030"
.750"
-
-
85


4-5/8" CF Flange Bored  4-5/8" CF Flange Bored  911205  4.62"
4.030"
.750"
3"
-
85


6" CF Flange Blank  6" CF Flange Blank  911106  5.97"
5.128"
.780"
-
-
100


6" CF Flange Bored  6" CF Flange Bored  911206  5.97"
5.128"
.780"
4"
-
100


6-3/4" CF Flange Blank  6-3/4" CF Flange Blank  911107  6.75"
5.969"
.840
-
-
125


6-3/4" CF Flange Bored  6-3/4" CF Flange Bored  911207  6.75"
5.969"
.840
5"
-
125


8" CF Flange Blank  8" CF Flange Blank  911108  7.97"
7.128"
.880"
-
-
180


8" CF Flange Bored  8" CF Flange Bored  911208  7.97"
7.128"
.880"
6"
-
180


10" CF Flange Blank  10" CF Flange Blank  911110  9.97"
9.128"
.970"
-
-
Contact Factory


10" CF Flange Bored  10" CF Flange Bored  911210  9.97"
9.128"
.970"
8"
-
Contact Factory


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