Cargo Container Seals, Shipping Container Locks | Sealock Security Systems Launched in 1996, Sealock Security Systems, Inc. is a leader in creating industry-best tamper-evident container security technology. In an ongoing effort to provide peace of mind to importers, exporters and freight forwarders, Sealock Security Systems of Miami, Florida has earned certification as a C-TPAT partner from the Department of Homeland Security.