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Feedthroughs & Viewports > Electrical Feedthroughs > Ceramic Break Feedthroughs

Cryogenic Ceramic Breaks

  • Provide electrical insulation for water or LN2 cooling lines (depending on break type)
  • Rated for high and ultra-high vacuum applications
  • Constructed with vacuum-grade materials, including 304 stainless steel weldable lips, high-purity alumina ceramic insulation and vacuum tube-grade braze alloys
  • Available in 1/8", 1/4", and 3/8" tube sizes
  • Cryogenic Breaks: Feature a flexible seal design and the use of an expansion alloy that has a low thermal coefficient of expansion enables for operation at cryogenic temperatures to -200º
  • Water Breaks: Feature OFHC copper weldable lips which can be welded or brazed to copper or stainless steel cooling lines
  • Non-magnetic ceramic breaks are available; however, our standard ceramic breaks do contain minimal magnetic materials.

Dimensional Drawings

Got VacuCADSM?
VacuCAD is a free library containing thousands of 2D CAD drawings (in DXF format) and 3D Models (in STP format) for many of our standard vacuum components and chambers. Please Log in

Ordering Table


Voltage
(V)
Conductor
Material
Ends Dim
A
Dim
B
Dim
C
Dim
D
PartNo Price Add
Item
VacuCADSM
Voltage
(V)
Conductor
Material
Ends Dim
A
Dim
B
Dim
C
Dim
D
PartNo Price Add
Item
VacuCADSM
3kV Stainless Steel 1/8" Tube End 1.80 0.312 0.30 0.125
CFT03C0121
$66.00
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6kV Stainless Steel 1/4" Tube End 3.00 0.54 0.67 0.25
CFT06C0251
P.O.R.
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6kV Stainless Steel 1/4" Socket Weld 3.00 0.54 0.67 0.31
CFT06C0311
$97.90
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6kV Stainless Steel 3/8" Tube End 3.00 0.79 0.67 0.38
CFT06C0371
$157.00
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13kV Stainless Steel 1/4" Tube End 3.00 0.57 0.57 0.25
CFT13C0251
$86.30
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13kV Stainless Steel 3/8" Socket Weld 3.00 0.79 0.52 0.437
CFT13C0441
$150.00
(please log in)

Note: The electrical and thermal ratings specified are of safe operating limits determined by various factors including material properties, mechanical design, and the intended operating environment. All electrical ratings are based on operation with one side in dry atmosphere and the other side in vacuum of less than 1 x 10-4 Torr. All VacuCAD files as well as any dimensions shown or listed in our ordering tables do not include manufacturing tolerances and are provided for reference only.

Feedthrough Selection Guide
Finding the right feedthrough has never been easier with our step by step Feedthrough Selection Guide. You can narrow down our feedthrough offering by simply choosing from a variety of different options suitable to your requirements. If you can't find the feedthrough you need or want a custom configuration, please email sales@lesker.com with your inquiry.

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