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Transportation and cargo security seals offer multiple benefits. In addition to avoid damage to items being transported, they can prevent cargo theft, which is especially common in regard to expensive loads. Cable locks and plastic seals, just to name a few options, are provided by American Casting and Manufacturing.
Security seals create a tamper-evident barrier on trailers, containers, and cargo units that deters theft, documents chain of custody, and provides a clear trigger for investigation at delivery. A serialized seal logged at origin and verified at receipt means any unauthorized access between those two points leaves a documentable discrepancy, giving receivers a reason to hold the load before accepting it and giving shippers evidence to support a claim.
The transportation and cargo line includes plastic pull-tight seals, fixed-length plastic seals, heavy-duty cargo seals, flat metal truck seals, cable seals, bolt seals, steel globe and ball seals, and tamper evident labels. Options cover everything from courier bags and pallet totes to trailer doors and intermodal containers across all modes of transport, including road, rail, air, and sea, with over 30 models available to match every container type and security requirement.
Plastic cargo seals provide cost-effective tamper evidence for low-to-medium risk loads and apply and remove easily without tools. Bolt seals require industrial bolt cutters to remove, offering significantly greater physical resistance, making them the appropriate choice for high-value cargo, regulated shipments, or loads requiring ISO 17712 High Security compliance for international freight. The selection comes down to cargo value, compliance requirements, and the physical resistance needed.
Breaking strengths range from 25 lbs (11.3 kg) on lighter pull-tight models up to 155 lbs on heavy-duty fixed-length seals. For trailer door applications, a seal in the 100 to 155 lb range is generally appropriate. For courier bags, document pouches, or pallet totes, a lighter model in the 25 to 50 lb range is sufficient and more cost-effective for the security level those applications require.
The High Security Bolt Seal (Model ISO-1H) meets ISO 17712:2013 High Security requirements and is the appropriate choice for international container shipments subject to C-TPAT or customs authority sealing requirements. For domestic loads that do not require ISO compliance, the Heavy Duty Bolt Seal (PBLT2) or All Steel Bolt Seal (BLT1-H) are strong alternatives that provide significant physical resistance without the certified seal premium.
Yes. Most transportation and cargo seals in this line are available barcoded and sequentially numbered. Scanning seal numbers at origin and delivery creates a verifiable electronic record supporting carrier compliance programs, shipper audits, and regulatory documentation for high-value or regulated shipments. For carriers managing hundreds of loads per day, barcoding eliminates the manual transcription errors that create audit trail gaps.
Thread the seal hasp or cable through both trailer door rod handles, never just one, and lock it firmly so the seal body sits flush against the handle with no slack that would allow the rod to move. Record the serial number on the bill of lading before the driver departs. At delivery, the receiver checks the number before breaking the seal. If the rod was moved during transit, the seal will show visible deformation or breakage even if someone attempted to reseal it.
Yes. Custom sequential numbering, carrier name, logo, and color options are available. Many trucking companies and freight brokers use custom-printed seals on high-value loads to maintain brand accountability and make unauthorized seal substitution immediately detectable. Contact American Casting and Manufacturing at (800) 342-0333 for specifications, minimum order quantities, and current lead times.