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.

Christmas and New Year Holiday Shutdown
Century Seals will be closed Dec. 25th - Jan. 1st for the Christmas and New Year Holiday Season. We will return for business on Tuesday Jan. 2nd.
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.
Job Opportunity for Metal Finishing Technician
Our Subsidiary, Fin-Tec, in Salisbury MD is currently looking for a Metal Finishing Technician to operate plating lines such as Chromate, Irridite, Nickel - (Electroless & Sulfamate) Copper & Tin-Lea ... [READ MORE]
503 Harrington Street • P.O. Box 720 • Seaford, DE 19973 • (302) 629-0324 • Fax (302) 629-0325