x
x
x
x
  0  
Key High Logo

Bell Jars, Collars, Feedthrough's, & Accessories



Introduction to Bell Jars, Collars, Feedthrough's, & Accessories

Key High offers many standard building block components, including the Bell Jars, Collars, and Baseplates offered in this section. These standard components allow users to quickly integrate "standard" components to build up a working vacuum chamber.

Key High's Bell Jars, Collars, and Baseplates are fabricated from 304l stainless steel, which has excellent corrosion resistance. These components will operate in pressures as low as 2 x 10-9 torr. The tube portions of these components have a smooth, satin glass bead finish. The flanges are mechanically polished to a 32 rms finish. TIG welds are passivated.

Our facility performs machining, welding, assembly, and mass spectrometer leak testing. All parts are cleaned before welding, allowing bright, clean, smooth welds. Automated pulsed welding is used wherever possible, resulting in superior-quality weld beads. Upon completion of fabrication, weldments are finished per specification, cleaned, mass spectrometer leak tested, and then prepared for shipment.

As with all of our products, our custom products group can quote special components, in most cases, from simple sketches


Product information is subject to change without notice. Product images may include options or accessories not included with the base model.


Precision Welded. Performance Proven.
For 50 years, Key High Vacuum Products, Inc. has been a trusted leader in precision-engineered stainless steel high vacuum weldments. With tens of thousands of unique weldments in use—from particle accelerators to industrial leak detectors—our expertise is proven across industries. Rooted in innovation, craftsmanship, and an unwavering commitment to customer satisfaction, we deliver high-quality, customized solutions that drive success. Every day, our team brings a unique blend of passion and precision, ensuring your goals are met with excellence—because your mission matters. Experience the Key High difference.
Key High Logo
Key High Vacuum Products, Inc.
36 Southern Boulevard, Nesconset, NY 11767
1-631-360-3970
© 2025 Key High Vacuum Products, Inc.