Please select your country or region to be
directed to the appropriate Lesker site.

Representative Image

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 end and socket sizes
Contact Us
Contact Us
To contact someone directly, please click here, or call +1 412 387 9200 to get in contact with your dedicated sales team.
  • 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.

Ordering Table

(Click column headers to sort data)

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
Feedthrough Selection Guide
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 contact us by clicking here or call +1 412 387 9200 with your inquiry.
Contact Us - Cryogenic Ceramic Breaks