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Custom Vacuum Base Plates

Vacuum base plates utilize tightly sealed connections for stabilizing and providing a flat surface in your vacuum chamber system. Nor-Cal Products supplies 304 stainless steel base plates in a variety of sizes for use in combination with Nor-Cal bell jars and feedthrough collars. We offer high and ultra-high vacuum chamber parts that are manufactured to standard specifications or built-to-print for equipment manufacturers. Our in-house tooling and equipment help reduce costs and allow faster turnaround time while under full manufacturing supervision at each stage of our ISO 9001:2015-Certified production process.
Our bell jars are supplied with a single dovetail grooved base flange which can mate to a feedthrough collar or baseplate. A single 4" ID glass viewport and coordinating lifting lug are included.

Contact us for more information about Nor-Cal Products’ base plates, bell jars, and feedthrough collars or to speak with a Nor-Cal expert. Need a custom quote? Click here or email today!

Custom Vacuum Base Plates Features

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

Industrial Base Plate Features

Nor-Cal’s base plates are manufactured from 304 stainless material for improved durability, performance, and corrosion resistance. Our base plates are sleek, lightweight, and hold up to long-term, high-volume vacuum system demands across a variety of industrial applications. While standard base plates have a glass bead finish, we also offer electropolished finish options recommended for ultra-high vacuum surface science chambers that operate at pressures in the 1x10-11 Torr range. Our base plates fit vacuum range 1 · 10-8 mbar to 1 bar and have an impressive temperature range of 20 °C to 200 °C.
Every Nor-Cal base plate Includes one FKM O-ring.

High-Quality Base Plate Specifications

Our 304 stainless steel baseplates vary depending on the size of your corresponding vacuum system components. Please consult our product managers for the exact capabilities and specifications of our base plates, in addition to viewing our base plate specifications below.


  • 12”
  • 18”
  • 24”


  • Bead blast
  • Electropolished

Fits Feedthrough Collar Sizes

  • 12” OD
  • 14” OD
  • 20” OD
  • 26” OD

Base Plates for Bell Jars & Feedthrough Collars

With over 50 years of expertise in the vacuum science industry, Nor-Cal 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:
  • Semiconductor industry
  • Research laboratories
  • Equipment manufacturers
  • Energy and aerospace
  • Life and health sciences development

Why Choose Nor-Cal for Vacuum Base Plates

Nor-Cal Products, Inc. is dedicated to the continual improvement of our manufactured and purchased goods through the implementation of a carefully planned quality management system. We strive to meet our primary goal of 100% customer acceptance by manufacturing defect-free parts with on-time delivery, competitive pricing, and the best possible customer service. Our strong in-house capabilities support the quality of our components and services in a variety of areas, including:

Contact Nor-Cal Products for Liquid Nitrogen Vacuum Traps

Contact us for more information about our full line of base plates or to speak with a Nor-Cal expert. Need a custom quote? Click here or email today!

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