Bolt seals are heavy-duty, tamper-evident locking solutions designed for single-use applications to secure cargo during shipping, storage, and logistics handling. Certified to ISO 17712:2013 (H-class) standards, they are an ideal choice for container sealing, customs control, and protection of sensitive or high-value shipments.
The seal is composed of a hardened carbon steel locking pin and a reinforced barrel body. The internal steel structure provides excellent tensile strength and resistance to forced entry, while the ABS outer layer protects against rust, corrosion, and environmental exposure such as humidity, extreme temperatures, and mechanical vibration.
Each seal is individually marked with a laser-etched serial number on both the pin and the barrel, ensuring traceability throughout the supply chain. Once locked, removal requires bolt cutters, and any attempt to tamper will leave visible and permanent damage.
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Model No |
ST8714 |
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Brand Name |
SHENGTANG |
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Application |
All kinds of ISO compliant shipping containers, truck,van trucks,tank trucks, and trailer cargo doors, railway wagons, and freight cars |
|
Material |
High grade Q235A steel (pin & bush) +ABS coated |
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Certification |
with ISO9001, High Security ISO/PAS 17712:2013 certified |
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Color |
Red,yellow, blue，green, white and customized color |
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Height |
86.8mm |
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Diameter |
8mm |
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Printing type |
Laser printing |
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Printing content |
Serial Number, Letters,logo, barcode，qrcode, etc as customer required |
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MOQ |
1000Pcs |
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Package |
10 pcs/box, 25 boxes/carton |
Our bolt seal is extensively applied in global logistics and transportation industries, with its main function centered on securing ISO-compliant shipping containers. It plays a vital role in ensuring cargo safety and compliance in international trade environments, providing strong and reliable sealing performance.
Beyond container applications, it is perfectly suited for securing truck doors, van trucks, tankers, trailers, as well as railway wagons and freight cars, effectively reducing the risk of unauthorized opening during long-distance shipping. It is particularly recommended for high-value cargo, including electronics, pharmaceuticals, chemicals, and luxury merchandise.
Furthermore, it is widely used in bonded cargo shipments and C-TPAT certified logistics operations, supporting secure and compliant cargo handling. Whether transported by sea, land, or air, this bolt seal offers consistent and trustworthy protection throughout the entire journey.
High security structure – Built with hardened steel material, the seal ensures superior durability and resistance to external force, including prying, drilling, and shearing, effectively deterring unauthorized access.
Tamper evident – Once the seal is broken or removed, it leaves obvious visual damage that cannot be restored, making inspection quick and reliable for all parties involved.
Unique serial number – Laser-engraved numbering ensures every seal is individually identifiable, supporting efficient cargo tracking and reducing risks of counterfeiting or duplication.
One-time locking – Designed for irreversible locking, the seal cannot be opened once secured. It requires cutting tools for removal, ensuring clear evidence of tampering.
ISO 17712 certified – Certified according to ISO 17712 standards, making it suitable for international logistics operations and customs-controlled shipments.
Weather resistant – Capable of enduring extreme temperatures, humidity, and corrosion, ensuring consistent performance during extended transport cycles.
Easy application – User-friendly structure enables quick locking by hand, eliminating the need for extra equipment and improving working efficiency.
Widely used – Perfect for containers, trailers, tanker trucks, and bonded cargo, meeting a wide range of transportation security requirements.
1.Q：What kind of company are we ?
A： Shandong Shengtang Intelligent Technology Co., Ltd. is a leading professional manufacturer of disposable security seals in China. Established in 2012, we have over 14 years of industry experience, supported by a 15,000㎡ modern factory, more than 200 skilled employees, and 450 advanced production machines, ensuring stable capacity and reliable global supply.Our main products include Plastic Seals, Bolt Seals, Cable Seals, Meter Seals, Padlock Seals, and Metal Seals Our products are exported to major global markets including Europe, North America, Southeast Asia, the Middle East, and South America.
2.Q：How can we guarantee products quality?
A: We implement a strict two-stage quality control system to ensure consistent and reliable product quality:
Pre-production samples are always provided for customer approval before mass production;
Final random inspection is conducted prior to shipment;
3.Q:what products can you buy from us?
A: We manufacture a full range of disposable security seals, including:
Plastic Seals, Cable Seals, Bolt Seals, Meter Seals, FRID Seals,Padlock Seals,Metal Strap Seals, Barrier Seals, Animal Ear Tags and others.
We also offer customized solutions, such as LOGO printing, laser serial numbering, barcodes, qrcode and special packaging if needed.
4. Q: Why should you buy from us not from other suppliers？
A：We have 14 years experiences, 300 sets of models with different styles , meet your different demands with fast delivery. All our material is environmental, and we won many honors from government.
We offer strong and flexible customization solutions for customers, helping customers create differentiated and competitive security seal products.
We have a comprehensive pre-sales service , In-Sales Service, and after-sales service system, to provide our customers with end-to-end services.
5.Q:Do you accept custom orders?
A: Yes. We provide comprehensive OEM & ODM customization services, including:
LOGO printing and unique serial numbering
Customized sizes, colors, materials, and packaging
6.Q:What certifications do you have?
A:We maintain a complete and internationally recognized certification system, including:
ISO 9001 – Quality Management System
ISO 14001 – Environmental Management System
ISO 45001 – Occupational Health & Safety Management System
ISO 17712 – High-Security Seal Certification
Third-party test reports from SGS and other authorized institutions
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