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Bell Jars

12 Inch OD, 18 Inch OD, and 24 Inch OD Bell Jar Vacuum Chambers

Pfeiffer Vacuum Valves & Engineering stocks numerous Bell Jar styles manufactured to premium standards. Our vacuum bell jars feature a single dovetail grooved base flange, which can mate to a PV V&E feedthrough collar and baseplate within your existing vacuum system.

A 4" ID glass viewport and a lifting lug are included with every vacuum bell jar. Standard Bell Jars are constructed from 304 stainless steel, featuring a glass bead finish. Depending on your application requirements, Vacuum Bell Jars are available in multiple diameters and sizes. PV V&E is your trusted vacuum Bell Jar supplier with numerous available options.

Explore our full range of Vacuum Bell Jar products and request a quote, or contact us directly for your vacuum component needs today.


Bell Jars Features

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

Vacuum Bell Jar Features

Stainless steel Bell Jar Vacuum Chambers are designed to withstand the pressure of vacuum systems, while the composition of Vacuum Bell Jars provides enhanced corrosion resistance. Additional features of PV V&E Bell Jars include:

304 Stainless Steel Vacuum Bell Jar Applications

Bell Jars are ideal for containing air and other materials that are removed by suction. Semiconductor, thin-film deposition, and compound semiconductor processing are typical applications for our high-vacuum, O-ring sealed chambers operating at pressures down to 1x10-9 Torr. Please consult our Product Managers for exact capabilities, as Specific use cases vary by industry and the size of your vacuum system. Frequent applications, including:
  • Laboratory Coating Units
  • Degassing Silicones and Epoxies
  • Freeze Drying
  • Stabilizing Wood

Vacuum Bell Jar Customization Options

While standard Bell Jar options are available in 12", 18", and 24" diameters, our elite team of designers and engineers are dedicated to producing the highest quality Bell Jars in various sizes that meet your application requirements. Pfeiffer Vacuum Valves & Engineering can fabricate vacuum chambers in a wide range of shapes and sizes with doors, stands, water jackets, and Mumetal shields.

Vacuum Bell Jar CNC Machining and Tube Bending Capabilities

Our CNC machining and tube bending capabilities allow us to form close tolerances and manufacture custom components to your specifications. We can provide vacuum-fired 316L stainless steel, electropolishing, and metal seals recommended for ultra-high vacuum surface science chambers that operate at pressures in the 1x10-11 Torr range.

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. Similar products to Bell Jars include:

In-House Tooling for Vacuum Bell Jar Manufacturing

PV V&E's manufacturing capabilities include electropolishing and cleanroom assembly and packaging services. Our additional strong in-house capabilities support the quality of our components and services in various areas, including Engineering, Logistics, and Quality Assurance.

Why Choose PV V&E for Your Vacuum Bell Jar Needs?

At Pfeiffer Vacuum V&E, we manufacture Bell Jars to fulfill Ultra-Clean (UCV) component requirements using select grade 304 stainless steel. We supply single chambers designed from customer specifications for university or national laboratory research projects and production quantity chambers built-to-print for equipment manufacturers.

Let’s Get Started!

Discover the difference of partnering with Pfeiffer Vacuum Valves & Engineering for your Vacuum Bell Jars 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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