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.

Century Seals at IMS 2018
We are excited to announce that we will be exhibiting at the International Microwave Symposium in Philadelphia on June 12-14. Come visit us at booth # 2337
Single Pin Feedthroughs
Need single pin terminals quick? Ask us about our stock options that can save you money and lead-times for your next job.
Happy New Year!
As we ring in the New Year of 2018 at Century Seals we look forward to continued company wide growth and service to our customers. Thank you all for a successful year in 2017.
503 Harrington Street • P.O. Box 720 • Seaford, DE 19973 • (302) 629-0324 • Fax (302) 629-0325