110 Year history and Family owned

Over 100 years designing and manufacturing high security and tamper evident metal, plastic and adhesive security seals.

Started in 1910, and incorporated in 1916, American Casting & Mfg. Corp. is now a fourth generation family owned manufacturing business specializing in security seals and related security products. Our proud beginning is traced to our founders. Brothers & partners HLC Wenk Jr and Norman B. Wenk had a manufacturing vision of excellence through quality, innovative production, customer service, and employee loyalty and respect.


Today we continue the tradition of excellence through superior technology, exceptional customer service, and teams of dedicated professionals.



We manufacture tamper evident seals for every level of security and across a wide range of industries. Quality and accountability assures that we conform to the highest standards, meeting the requirements of ISO-9001:2008 quality management systems. Our manufacturing and offices are located in Plainview, NY.

security seal manufacturing in progress


Our delivery and scheduling is second to none. On site manufacturing in Plainview, NY allows AC&M sales reps the flexibitlity to rush ship custom orders.

driver delivering security seals

Custom Options

American Casting offers a wide selection security seals for all industries. Advanced printing technology allows for logos, custom text, custom numbering, and barcodes. We look forward to supplying the best security seals for your application, in the fastest time, and with the most reasonable prices.

custom security seals