Pricing on Request. Contact Us.

Thermionics' home office is located in Hayward California. We have production facilities at Port Townsend, Washington and in several other locations in California.
1842 Sabre Street
Hayward, California 94545
Telephone: 800-962-2310 or 510-538-3304
Fax: 510-538-2889
Sales: sales@thermionics.com
Our office hours are from 8am to 5pm PST, Monday through Friday. Close

About Thermionics

Since 1958 Thermionics has designed, developed, and manufactured ultra high vacuum (UHV) equipment for scientific and industrial applications. Our products are the result of careful research and development, rigorous testing, and continuing performance evaluation.

For new components and systems, or the modification and repair of existing equipment, Thermionics will deliver the best equipment and value to you.

Our product lines include:

High Vacuum Pumps
Manipulators and Mechanical Feedthroughs
Vacuum Coating Systems
Flanges and Fittings
PyraFlat and TriMetal Flanges
Mechanical Feedthroughs
Electrical Feedthroughs
Vacuum Pressure Gauges
Helium Leak Detectors

Thermionics Family of Companies

Need something else? Let the Thermionics’ family of companies help you.

TMPI Precision Cleaning Service

Chemical and mechanical (including CO2) cleaning of metals, ceramics, quartz, glass and other materials

3118 Depot Road
Hayward, CA 94545

Telephone: 510-786-0680
Fax: 510-786-0178



Transformers, Magnetic Devices

1295 North Emerald Avenue (Suite K)
Modesto, CA 95351

Telephone: 209-576-1840
Fax: 209-576-297


Copyright © 2017 TLI Enterprises, Inc. and its subsidiaries. All Rights Reserved. Trademarks and registered trademarks are the property of their respective companies.
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