With roots in United Seal Company, founded in 1900, and Porter Safety Seal, founded in 1905, United Security Seals has more than 110 years of security-seal manufacturing history. Based in Columbus, Ohio, the company makes tamper-evident seals for public and private-sector customers and is identified as North America’s largest manufacturer of lead and wire seals.
C-TPAT compliant
Compliance program
ISO 17712 certified
American Casting & Mfg. CorpStarted in 1910 and incorporated in 1916, American Casting & Mfg. Corp. manufactures tamper-evident security seals and related products from its Plainview, New York facility. Now in its fourth generation of family ownership, the company combines more than a century of seal-making experience with custom printing and barcoding for applications ranging from cargo protection to utility meters. Its manufacturing system meets ISO 9001 requirements, and its plastic security seals are made in the USA.PLAINVIEW, NY
Cambridge Security SealsCambridge Security Seals is a privately owned American manufacturer headquartered in Pomona, New York, known for producing security seals in the United States. Its work centers on helping organizations protect goods and maintain accountability, with quality management supported by ISO 9001:2015 certification.POMONA, NY
Sealing Specialists and Service CompanyFounded in 1976 by Tony Urso, Pittsburgh-area Sealing Specialists and Service Company has grown from a distributorship into a 25-employee manufacturing, repair and distribution center for industrial seals. The Glenshaw company produces custom seals and gaskets, distributes sealing products across the United States and Canada, and repairs pumps and hydraulic cylinders in-house. Its ISO 9001:2015 certification and planned 22,000-square-foot expansion reflect a business entering its fifth decade with the same focus on making seal sourcing faster and more practical for customers.GLENSHAW, PA
Sealing DevicesSealing Devices grew from Terry Galanis Sr.’s $157 home-based venture in Alden, New York, into a third-generation family-owned company serving critical applications. Founded in 1963, the Lancaster-based manufacturer supports customers with custom sealing work and related engineering guidance, while maintaining a 225,000-plus-square-foot manufacturing footprint and serving all 50 states and more than 20 countries. Its quality systems have been certified to ISO 9001:2015 and AS9100D.LANCASTER, NY