Industrial tamper-proof high-protection seal

Tamper-Proof High Security Seals | 1000pcs MOQ | HK Direct

$USD 0.28/strip

Bulk **tamper-proof high security seals** - **1000pcs minimum order**. **Hong Kong factory direct** pricing. ISO 17712 certified, anti-corrosion steel. For logistics/containers. Free samples + express shipping.


微信图片_20250613163005.jpgProduct definition and positioning

The High-Security Seal is a one-time sealing tool designed for scenarios with high security requirements, focusing on the core objectives of "preventing violent disassembly, technical opening, and identity forgery." In contrast to ordinary seals, it employs a combination of high-strength materials, precise locking mechanisms, and multiple anti-counterfeiting designs to ensure that the item remains secure during transportation and storage, making it widely used in fields with extremely high security demands, such as customs regulation, financial escort services, and hazardous materials transportation.

Core structure design: a double breakthrough in mechanics and anti-counterfeiting

1. Precision design of lock mechanisms

· Single-way spring biting system: The internal locking system uses a spring two-way locking structure. After tightening, the backlink and the lock slot form a "one-way freeze" effect. When the external force pulls, the back link will get tighter and tighter. Forcibly dismantling will cause the lock to break or deform, leaving a clear trail of damage.

· pry-resistant locks: Some high-end products add pry-resistant metal sheets or exotic slots at the clasp to prevent tools from inserting prying motions, such as customs' common "bullet" seals. The locks use conical metal columns that cannot be broken by non-specialized tools.

2. Integrated molding process

The injection moulding or metal diecasting process is used to ensure that the seal body has no splicing gaps and avoids cracking from the joining site. For example, the seal of high protection through one-time die casting molding, lock and seal rod connection intensity can reach the tensile strength of more than 90%.

Material combination: high intensity and resistance to natural weathering

1. Metal high-security seals

· High-strength steel: High strength (tensile strength ≥ 500N) and high corrosion resistance are suitable for harsh environments such as maritime shipping and chemical industry. For example, high-security seals in containers are often used with steel diameter 6-8mm, with alloy locking, which can withstand forklift collision or violent pull.

· Aluminum alloy: lightweight design (40% lighter than stainless steel), both hardness (tensile strength 300-400 N), often used for air cargo or precision instrument sealing.

2. High safety seals of composite materials

· Nylon + metal embedding: The seal rods are made of reinforced nylon (PA66 + fiberglass), with tensile strength of 150-200N, and the buckle part is embedded with copper or aluminum alloy sheets to improve the resistance to chopping, and the temperature range can reach - 40 ° C to 120 ° C, suitable for cold chain or high-temperature transportation scenarios.

· ABS + steel core: the internal seal through the steel core line, the external package ABS plastic, both flexible and anti-cutting, often used in the truck compartment, tank car seal.

Usage diagram

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Core application scenario: covering all areas of high security needs

1. Customs and Cross Border Logistics

· Customs regulatory seals for containers and container trucks to ensure that goods cannot be opened without permission in cross-border transport.For example, the high-security seal used by the Chinese customs uses a unique customs number, together with a lead seal + plastic composite structure, and the number will break and deform after damage, and cannot be restored.

· Typical scenario: China-Europe freight train containers are sealed and cargo is transferred in a bonded area.

2. Finance and Precious Goods Shipping

· The seal of cash transport van and jewelry escort box should have the characteristic of "violent destruction."For example, high-security seals for financial purposes use metal lead seals + laser coding, and the coding is bound to the shipping document, and any disassembly will cause the lead seal to crack and the encoding to be misplaced.

· Application cases: ATM cash box replacement, valuables transport in Paimao.

3. Dangerous Goods & Energy Industry

· Seal oil pipeline valves, natural gas storage tanks, and chemical transportation tanks to prevent illegal openings that lead to leakage or theft.For example, the tank car high protection seal adopts anti-acid and alkali material, with anti-off lock, tensile strength ≥ 300 N, while resistant to gasoline, diesel corrosion.

· Special scenarios: radioactive material transport containers, fireworks storage seals.

Five core advantages: Redefining seal safety standards

1. Anti-tamperability: Physical damage can be traced

· In addition to conventional break marks, some high-protection seals use a "fragile anti-counterfeiting layer" design: the surface of the lock is covered with a fragile coating, which will crack into a specific pattern when disassembled and cannot be restored;Or suppress the microscopic text on the seal pole, and after the text is destroyed, the text can be distinguished by a magnifying glass.

2. Operational convenience: no need for specialized tools

· Highly secured seal: simply attach the seal to the seal hole, the lock automatically freezes, and the operation is completed in 3 seconds;

· Lead sealed high-protection seal: Use a lead seal tong to tighten the lock. After tightening, the lead seal surface forms a unique tightness, which is convenient for visual inspection.

3. Environmental Adaptation: durability for all scenarios

· Resistance to extreme temperatures: - 50 ° C ~ 150 ° C does not deform, for example, the high seals for cargo seals on the Arctic route use cold-resistant nylon, and remain flexible at - 40 ° C;

· Anti-ultraviolet aging: adding anti-UV additives, outdoor exposure for more than 5 years not brittle, suitable for open storage scenarios.

4. Cost control: cost-effectiveness is better than electronic seals

· Single cost is about $0.3-0.5 (depending on material and specifications), much lower than the smart electronic seal ($2-8), suitable for large-scale batch use, especially in the logistics industry annual consumption of up to 1 billion.

5. Custom anti-counterfeiting: identity unique identification

· Laser engraved coding: Each seal is engraved with a unique 4- to 8-digit digital code, along with a barcode or QR code (non-electronic chip), which can be scanned into the system for batch management and logistics tracking;

· Enterprise exclusive logo: printing enterprise LOGO, warning slogans (such as "seal damage is strictly prohibited to receive"), improve brand recognition and management standardization.

Performance testing standards and quality control

1. Key performance indicators

· Tensile strength: Metal seal ≥ 500N, composite material ≥ 150N (tested by tensile testing machine);

· Shear strength: Can withstand shear force ≥ 800N (simulating the damage of wire cutters);

· Resistance to natural weathering: No corrosion in salt-spray test (5% NaCl for 240 hours), no deformation in hygrothermal test (60 °C, 95% humidity for 1000 hours).

2. Non-ISO-certified quality control

· Follow national standards (such as GB / T 22344-2008 "General Technical Conditions for Seals") or industry standards (such as Customs High Protection Seal Technical Specifications);

· Each batch sample was tested for blasting (simulation of extreme external forces) and locking reliability (checking bite performance after tightening 100 times repeatedly), with a defect rate of less than 0.1%.

After sales service and application advice

1. Warranty & Aftersales Support

· Offer a 1-2 year warranty (depending on the material) and non-human damage can be returned free of charge;

· Provide seal management system docking services for large customers to realize coding batch recording and logistics status tracking (a non-intelligent electronic system, only a data management platform).

2. Scenario Selection Suggestions

· Shipping container: use high security seal, lock rod steel core diameter 8mm, with laser coding;

· Pharmaceutical cold chain: Choose cryogenic nylon + steel core seal, suitable for - 30 ° C environment, with fog-proof coating;

· Financial escort: Choose lead alloy high security seal, with the bank's exclusive embossed LOGO, each coding and escort single binding.

With "physical security" as the core, high-protection seals have built a reliable security barrier for global logistics, customs, finance and other fields through the combination of material innovation, structural optimization and anti-counterfeiting technology without relying on electronic intelligent systems. Its "high cost-effectiveness, high reliability and high adaptability" characteristics make it an irreplaceable security tool in traditional sealing scenarios.



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