Century Seals is an ISO 9001:2015 manufacturer of the highest quality hermetic glass to metal seals. With over 100 years of combined experience, we have the knowledge to serve you best.

Our Products: Miniature hermetic feedthroughs, Relay headers, DIP headers, TO packages, Machined Kovar packages for microwave applications, custom parts to meet specifications, and many others. See the products tab for pictures.  

Product Applications: Aerospace, Defense, Industrial, RF Microwave, Semiconductors, Telecommunications, Refrigeration, and a wide variety of specialty manufacturers.


Have we let you down or not met your expectations? Let us know via this customer complaint form.

Upcoming Trade Show
We will be exhibiting at the iMAPS New England 44th Symposium & Expo on May 2nd at the Boxboro Regency Hotel & Conference Center in Massachusetts. Stop by and see us!
Ceramic to Metal Seals
In addition to our offering of glass to metal seals, we also manufacture ceramic to metal feedthrough connectors. Keep us in mind for your next project.
Happy New Year
Century Seals is back in the New Year 2017! Give us a call or send an email with all your hermetic packaging needs.
503 Harrington Street • P.O. Box 720 • Seaford, DE 19973 • (302) 629-0324 • Fax (302) 629-0325