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

Holiday Closure

Century Seals will be closed on Thursday 4 July and Friday 5 July, 2024 in observance of the Independence Day Holiday. We'll be back in the office... Read More

See you at IMS 2024!

Century Seals is attending the International Microwave Symposium Trade Show from Monday June 17 through Thursday June 20, 2024. We are still open for ... Read More

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

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Clients & Industries We Serve




Sight Glass

Gas Detection

Energetic & Pyrotechnics

Microwave & RF