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.

IMS Boston 2019
Century Seals is happy to announce that we will be exhibiting at the International Microwave Symposium in Boston on June 4-6. See us at booth # 145. We will be unveiling some new products!!
Happy New Year 2019
Century Seals would like to wish it's customers and vendors a very happy New Year!
Holiday Shutdown
We will be closed Dec. 24th - Jan. 1st for the Holidays. We will return again on Jan. 2nd. Merry Christmas and Happy New Year!
503 Harrington Street • P.O. Box 720 • Seaford, DE 19973 • (302) 629-0324 • Fax (302) 629-0325