Fixed length plastic seal is a pre-measured, non-adjustable security device made from durable polymers such as polypropylene or polyethylene. It consists of a rigid strap with a self-locking mechanism, often marked with a unique serial number, barcode, or QR code. Once applied to a truck door, container, or trailer, the seal cannot be reused or removed without visible damage, ensuring tamper-evident protection.

Unlike adjustable seals, fixed-length variants are manufactured to a specific size, eliminating slack and ensuring a snug fit on standardized locking points. This precision reduces the risk of accidental breakage or tampering during transit.

Tamper-Evident Mechanism:

Any attempt to cut, pry, or remove the seal results in irreversible damage (e.g., broken straps, cracked locks).

Sequential numbering or barcoding enables easy tracking and verification.

Durable Materials:

High-quality plastics resist corrosion, moisture, and UV exposure, making them ideal for long-haul transport.

Lightweight yet sturdy enough to withstand rough handling.

Compliance Standards:

Many fixed length security seals meet ISO 17712 requirements for tamper resistance, classifying them as “security” or “high-security” seals depending on their strength.

Customization:

Seals can be color-coded or printed with company logos, shipment IDs, or hazard labels for quick visual identification.

Fixed-length plastic truck seals are widely used in scenarios requiring standardized security:

Road Freight: Securing truck and trailer doors to prevent unauthorized access.

Warehousing: Locking storage units or pallets containing sensitive goods.

Cross-Border Shipping: Complying with customs regulations that mandate tamper-evident seals for container inspections.

Retail and E-Commerce: Protecting high-turnover goods like electronics or apparel during distribution.

How to Choose the Right Fixed-Length Seal

Assess Security Needs:

Opt for ISO 17712-certified seals for international shipments.

Select bright colors (e.g., red, yellow) to deter tampering.

Verify Compatibility:

Ensure the seal’s length matches the locking mechanism on trucks or containers.

Prioritize Traceability:

Choose seals with scannable barcodes or RFID tags for integration with digital supply chain systems.

Fixed length plastic seals strike a balance between affordability, reliability, and compliance, making them a cornerstone of modern logistics security. By investing in quality seals and integrating them with tracking technologies, businesses can mitigate risks, streamline operations, and uphold trust in global supply chains.