Selection Of Materials And Security Mechanisms For Container Bolts And Seals

For maritime container transport, a bolt seal provides dual-layer security through a rigid steel bolt-and-locking-barrel mechanism requiring heavy-duty bolt cutters for removal. Constructed from A3 steel and ABS plastic (81mm × 28.5mm), available in red, yellow, blue, green, orange, white, or custom colors. The seal offers a physical barrier against forced entry while the single-use locking system provides visible tamper evidence. Customize with printed text, barcodes, and sequential serial numbers for traceability. Select ISO 17712 certified bolt seals for containers for international shipping compliance.

Dual-Layer Security Mechanism

The bolt seal operates through two complementary security functions. The A3 steel pin, inserted through the container door hasp and locked into the barrel, provides physical resistance to cutting or prying. The locking barrel contains a spring-loaded mechanism that snaps the bolt into an irreversible locked position. Once engaged, the container seal bolt can only be removed by cutting, producing visible damage that signals tampering.

Key security features of bolt seals for containers:

• 🔒 Hardened A3 steel bolt resists cutting and leverage

• 🚨 Single-use locking barrel prevents resealing

• 📋 Sequential serial numbers for traceability

• 🖨️ Printed text and barcode options for identification

Construction and Materials

The bolt is constructed from A3 steel with a zinc or galvanized coating for corrosion resistance. The bolt head and shank are over-molded with high-impact ABS plastic, providing a surface for custom printing and visual tamper indication. The locking barrel contains a steel insert that engages the bolt's locking shoulder. The bolt and barrel are packaged with matching sequential serial numbers to ensure traceability for each bolt seal container unit.

Specifications:

• Material: A3 Steel and ABS plastic

• Male and female height: 81mm × 28.5mm

• Color options: Red, Yellow, Blue, Green, Orange, White (custom available)

• Customization: Text, barcode, serial number

ISO 17712 Compliance

International container shipments require compliance with ISO 17712. H-rated bolt seals for containers undergo rigorous testing for tensile strength, shear resistance, impact resistance, and bending strength. Customs agencies mandate rated seals for imports under programs like C-TPAT.

Performance Specifications

These metrics indicate the bolt seal can withstand substantial force before failure.

Color Coding and Identification

The visible colors serve both security and operational functions. Color-coding enables quick visual identification of seal status and ownership. Custom colors allow integration with existing container identification systems. The large marking surface on the ABS over-molding accommodates clear printed text, barcodes, and serial numbers for the container seal bolt.

Selection priorities for the container seal bolt:

1. Confirm required operating length matches the container hasp

2. Specify color and marking requirements for identification

3. Verify ISO 17712 certification status

4. Check serialization and traceability requirements

The bolt seal container design provides physical resistance, while ABS over-molding enables marking and tamper indication. Container bolt seals with visible colors and sequential numbering ensure traceability and operational efficiency for international freight protection.

Bolt Seals for Containers

The Bolt Seal is a barrier class bolt seal, designed for securing high value cargo. A solid steel bolt provides strength while a molded plastic coating provides tamper-evidence.It is an ISO17712:2010 compliant High security bolt seal with seal print and numbers.

Certificates :

• ISO9001:2000
• ISO/PAS 17712:2010 (C-TPAT) 

Packaging & Shipping

1. Standard Packing: 100pcs/bag 20bags/carton
2. Caton Specification: 37cm X 31.5cm X 24cm
3. Weight per carton:31KG
4. The packing can according to your requirement.

Our Services

1. 24 hours / day phone services
2. 12 hours / day mail services (your mail should be replied on next 12 hours)
3. OEM service: If you have your own model, Which want to do the same. We also can do for you.
4. Free sample

FAQ

1. Payment: Paypal, Western union,30% T/T advance , the balance before shipment.
2. We can do all product photo for you, before shipment.
3. Welcome the QC check the product before shipment
4. The other specific issues can negotiate.
5. Pls confirm the details with us before do the prepayment.

Company Information

YongJia XingHui Seal Co., Ltd. is located in Wenzhou and has been one of the leading professional suppliers of security seals in China since 2007.We specialize in Cable seal, Meter seal, Container seal, Plastic seal, Padlock seal and Seal lock ect. Our products have passed ISO9001 international quality management system.

Our company carries out strict quality control and establishes an advanced management system. Our plastic seals are secure because they cannot be unlocked once sealed. Our security seals are widely applied in supermarkets, shipping, petroleum transport, commodity inspection, logistics, instruments, boxes, power supplies, water supplies, war industry, concrete, post customs, railway finance, cargo cars, containers, air transport, packing barrels, larceny prevention, confidence breach, etc.

We welcome customers, business associations and friends from all parts of the world to contact us and seek cooperation for mutual benefits.

Our company takes customer first attitude to each customer,If you have some problem, Welcome to contact us

We can answer your question within 24 hours