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Vacuum Feedthrough Collars

304 Stainless Steel Vacuum Feedthrough Collars

Vacuum feedthrough connectors are constructed from 304 stainless steel and designed to expand bell jars' capabilities, providing radially oriented access ports. Nor-Cal Products, Inc. dba Pfeiffer Vacuum Valves & Engineering carries an extensive line of feedthrough collars manufactured to quality standards. Fully customized options are available upon request.
Explore our full range of products below and request a quote or contact us directly for all your vacuum feedthrough collar needs.


Vacuum Feedthrough Collars Features

  • 304 stainless material
  • Available in 12", 18" and 24" diameters
  • Glass Bead or Electropolish Finish
  • Includes one FKM O-ring

Vacuum Feedthrough Connector Options

Our vacuum feedthrough collars are available with multiple port options in various sizes and can be combined with PV V&E Bell Jars and Baseplates. Standard feedthrough collars are constructed from 304 stainless steel for added corrosion resistance and feature a glass bead finish. We can manufacture custom feedthrough collars for low-volume orders and fulfill Ultra-Clean (UCV) components. Standard vacuum feedthrough collar options include: 
Please Note: Every feedthrough collar purchase includes a 4" ID glass viewport and a lifting lug.

Feedthrough Collar Specifications

Each bell jar features a sole dovetail grooved base flange, designed to seamlessly connect with either a feedthrough collar or baseplate. Feedthrough collars are available with an outer diameter (OD) of 12", 18", or 20". Flange sizes are similar, with an OD of 14", 20", or 26". The vacuum range of most feedthrough collars is 1 · 10-8 mbar to 1 bar. The standard temperature range of feedthrough collars is -20 °C to 200 °C. Vacuum feedthrough collars can be installed and sealed with CF metal seal flanges or ISO KF flanges.

Vacuum Feedthrough Collar Industries Served

With over 60 years of expertise in the vacuum science industry, PV V&E has remained committed to providing the highest quality vacuum components for OEMs and industrial and research end-users. We have earned a reputation for manufacturing precise tee fittings and vacuum components for various industries, including:

Related 304 Stainless Steel Vacuum Components

We offer a complete line of vacuum accessories, including load locks, sample transfer and positioning devices, liquid and electrical feedthroughs, viewports, and roughing components. Related vacuum feedthrough products include:

In-House Tooling for Vacuum Pump & Fixture Plate Manufacturing

At Pfeiffer Vacuum V&E, we offer high-quality vacuum feedthrough collars manufactured to standard specifications or built-to-print for equipment manufacturers. Our in-house tooling and equipment help reduce costs, allowing for faster turnaround time while under full manufacturing supervision at each stage of our ISO 9001:2015-certified production process.

Why Choose PV V&E for Premium Vacuum Feedthrough Connectors

Pfeiffer Vacuum Valves & Engineering has earned a reputation as a world-class high and ultra-high vacuum feedthrough collar manufacturer. Our elite team of designers and engineers is dedicated to producing the highest quality feedthrough collars to meet your application requirements. Our CNC machining and tube bending capabilities allow us to form close tolerances and manufacture custom components to your specifications.

Let’s Get Started!

Discover the difference of partnering with Pfeiffer Vacuum Valves & Engineering for your Vacuum Feedthrough Connectors today. Contact us at 1-800-824-4166 or email us at You can also fill out our contact form here.

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