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.

We passed our ISO audit!
Century Seals is now registered to the ISO 9001:2015 standard. Find our certification under the "Documents & Downloads" tab.
Holiday Shutdown Dates
Century Seals will be celebrating the Thanksgiving and Christmas holidays with the following shutdown dates: Nov. 24-25 and Dec. 26-30. We will reopen on Jan. 2.
Chemistry Intern Wanted!
Our subsidiary, Fin-Tec in Salisbury Maryland, is currently looking for a Chemistry intern to work alongside of the lab tech. Reach out to Fin-Tec at their website below for more information and to ap ... [READ MORE]
503 Harrington Street • P.O. Box 720 • Seaford, DE 19973 • (302) 629-0324 • Fax (302) 629-0325