Bolt seals are high-security, single-use tamper-evident locking devices specifically designed to ensure maximum protection for cargo during transportation, storage, and cross-border logistics. Fully compliant with ISO 17712:2013 (H-class) international standards, they are widely used for container sealing, customs supervision, and safeguarding high-value goods in global supply chains.
Each seal consists of two critical components: a high-strength carbon steel locking pin and a durable locking barrel. The internal steel provides excellent resistance to cutting and forced removal, while the outer barrel is made of premium ABS material, offering strong protection against corrosion, rust, and environmental impact such as humidity, extreme temperatures, and vibration.
Every bolt seal is laser-marked with a unique serial number on both the pin and barrel to ensure full traceability and identification. Once locked, it can only be removed using bolt cutters, and any tampering attempt will leave permanent visible evidence, ensuring security and accountability.
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Model No |
ST8717 |
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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 |
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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 |
75.4mm |
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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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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.
1、High security structure – made of high-strength steel, anti-pry, anti-drill, anti-shear,making it extremely difficult to force open without professional tools.
2、Tamper evident – clear visible marks if broken or removed illegally,allows logistics personnel and customers to quickly inspect .
3、Unique serial number – laser printed for tracking and anti-counterfeiting, helping enterprises optimize supply chain management
4、One-time locking – cannot be reopened without bolt cutters.
5、ISO 17712 certified – accepted by customs globally for container security.
6、Weather resistant – durable for long-distance sea, land and rail transport.
7、Easy application – simple to lock, no extra tools needed,improving work efficiency.
8、Widely used – ideal for containers, trucks, tankers, customs cargo.
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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