Century Seals is an ISO 9001:2015 certified manufacturing company located in Seaford, Delaware. We manufacture and supply high-quality glass to metal hermetically sealed components and housings in a wide range of configurations: kovar, TO packages, relays, headers, feedthroughs, and machined packaging. With over 100 years of combined experience in our management staff, we have the product knowledge and customer service advantage to serve our customers best.
Incorporated in 1999, Century Seals continues to supply its customers with the highest quality products to give them the advantage they need. Century Seals has established a reputation for excellent customer service. Honest pricing, good communication, and respect for all business contacts have made us a preferred source in the microcircuit packaging industry.
Plating finishes are provided by Fin-Tec, a metal finishing company, wholly owned by Century Seals.
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Company News

Celebrating Delaware Manufacturing

Century Seals is proud to be a part of the Delaware State Chamber of Commerce's "Coolest Thing Made In Delaware" contest! The competitio... Read More

Holiday Schedule

So that our staff may celebrate the holidays with loved ones and enjoy a well-earned break, Century Seals will be closed from December 23, 2023 throug... Read More

Happy Thanksgiving!

Wishing all of our friends in the United States a Peaceful, Safe, and Happy Thanksgiving!   In observance of the holiday, Century Seals wil... Read More

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Clients & Industries We Serve




Sight Glass

Gas Detection

Energetic & Pyrotechnics

Microwave & RF