The Red Flag lineup
Seven products — three mechanical seals, one electronic GPS seal, and three software products — designed, engineered, and manufactured in Milwaukee, Wisconsin.
Mechanical seals
LXR
ISO 17712 high-security cable seal for containers, railcars and trailers.
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Duplexeal
High-security, tamper-resistant cable seal with two independent locking mechanisms.
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Hopper Bolt
Heavy-duty bolt seal engineered for hopper railcars and bulk transport.
Learn moreElectronic & software
LXE
Disposable GPS cable seal with live tracking and a 60-second theft alarm. No equipment, no subscriptions.
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STM
Security Transit Management — one dashboard for every shipment, seal and alert.
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SecureDrive
Digital trace of ownership handovers from origin to destination — mechanical seals plus driver-GPS tracking in the STM app.
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Digital Container Inspection
Guided digital inspections — truck & trailer, intermodal container, and railway equipment — that standardize checks and capture proof.
Learn moreSeals, tracking, and proof that work together
Every seal is serial-paired and tracked in the STM platform; inspections are logged with photos and timestamps. Hardware on the door, software for the audit trail.
Certified & independently tested
Red Flag is compliant to quality standards set and aligned with ISO, C-TPAT and Dayton Brown.
All certificationsNot sure which seal fits?
Tell us the equipment you seal — railcars, containers, or trailers — and we’ll match the product, or see the full system in a 30-minute demo.