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Gaskets, Seals, Tapes,
& Precision Die Cuts

We are one of the most diversified
converters in the industry!
ISO/IATF 16949


Our General Services
Capability Sheet


Resources Page

To learn more about our
Vertical Market Segments


Who is SMI?

Founded in 1974, Seal Methods, Inc. (SMI) is a full service premier fabricator of gaskets, tapes, seals and precision die cuts. We are one of the most diversified converters in the industry.

SMI’s customers and suppliers are valued partners whom we treat with dignity, integrity and trust. Our association with the finest raw material manufacturers throughout the world enables us to provide the widest possible selection of materials to meet your needs.

SMI USA encompasses over 300,000 square feet of manufacturing space. This includes our state-of-the-art 60,000 sq/ft headquarters in Santa Fe Springs, CA, our 20,000 sq/ft facility in Northern California, and our new 250,000 sq/ft operations in Nanjing, China with full converting capabilities, molding and extrusion lines. Our technical sales team and experienced staff help provide our customers with solutions globally. SMI can help!

SMI was one of the first to achieve ISO/IATF 16949 (formerly QS 9000) registration in our industry. We have elevated our systems to an uncompromising level of performance. These accomplishments are reflected in our unparalleled quality of products and customer service. At SMI we pride ourselves in exceeding customer requirements and expectations.


11915 Shoemaker Ave
Santa Fe Springs, CA 90670

Northern California:
33228 Central Avenue
Union City, CA 94587

Seal Methods Inc.
299 Kai Yuan Road,
Jiagning Nanjing 211100, China