Shipping Security Plastic Seals High Security Custom Plastic Seal Tag

Plastic seals are security devices made primarily from engineering plastics, designed to prevent counterfeiting, theft, and tampering. They are widely used across various industries and applications, with the core function of ensuring the integrity and safety of items during transportation or use. The plastic seal is a one-time use self-locking seal. Its colors are highly diverse, allowing for customization of colors and printing of logos. The size specifications are also quite varied. The plastic seals have adjustable lengths and possess anti-counterfeiting and anti-tampering functions. They are mainly used in logistics transportation, medical and storage fields, as well as for special sealing of video and beverage products, and plastic labels for bags and clothes.Transportation & Logistics‌
‌Truck and container seals‌: Made from ‌polypropylene‌, these high-strength seals (up to 55 lb breaking strength) secure cargo doors and fuel tanks. Numbered and laser-printed versions allow traceability.
‌Submarine hatches‌: Large plastic seals made from ‌Nylatron™ MC 907 PA6‌ close acrylic spheres in manned submersibles, meeting strict marine safety standards without needing lubrication. plastic seals‌ are tamper-evident or sealing devices made primarily from plastic materials, designed to secure containers, equipment, or systems against unauthorized access, contamination, or leakage. They are widely used across industries for their durability, cost-effectiveness, and traceability.

Plastic seals‌ are widely used across industries to ensure product integrity, tamper evidence, and operational safety, with key applications in food, pharmaceuticals, energy, transportation, and high-precision scientific fields. Typical applications include truck doors, trailer doors, totes, vales, airline catering carts, coin bags, inner drum bags, storage bags, and any container with a hasp or loops.Plastic seals are widely used to secure containers, tanker trucks, and courier packaging bags, preventing illegal opening or tampering with goods during transit. Their single-use design and unique numbering ensure that any manual unsealing leaves clear evidence, thereby safeguarding transportation security. In courier packages and e-commerce logistics, single-use anti-counterfeiting plastic seals (also known as security tags) are commonly adopted. Featuring unique textures or printable corporate logos, they enhance brand recognition while strengthening consumer trust. Utilities & Metering‌
In electric, water, and gas metering, ‌plastic padlock seals‌ (e.g., AC&M Type 7001) provide secure, disposable closure with visible tamper indication. These are especially useful for smart meters read remotely, where infrequent inspections require long-lasting, deterioration-resistant seals. Material Composition & Performance‌
Made from engineering-grade polymers such as:

‌Polypropylene (PP)‌: Resists moisture, chemicals, and UV exposure; widely used in outdoor and transport environments.
‌Acetal Copolymer‌: Offers high strength and low friction; used in reusable or high-cycle applications.
‌Polycarbonate‌: Provides impact resistance and clarity; suitable for inspection-friendly sealing.
‌Plastisol‌: A soft gasket-like liner used in metal caps for glass jars, forming an airtight seal during hot-filling processes. Logistics & Freight‌: Securing trailers, containers, and cargo doors to prevent theft.
‌Food & Pharmaceuticals‌: Induction seals and cap liners maintain sterility and freshness.
‌Banking & Security‌: Used on cash bags and evidence containers for chain-of-custody assurance.

1. Low cost with durable material & single-use irreversible design

Our plastic security seals are designed to provide a cost-effective solution while maintaining excellent durability and long-term reliability. Featuring a single-use irreversible locking mechanism, each seal is engineered for one-time application only, ensuring that any attempt of removal or tampering will cause visible damage, effectively preventing unauthorized reuse and enhancing overall security performance in logistics and supply chain operations.

2. High-strength materials with stable tensile performance

Manufactured using high-quality PP or engineering-grade plastics, our seals deliver consistent and stable tensile strength under different working conditions. These high-performance materials ensure excellent resistance to pulling force, impact, and mechanical stress, making them suitable for demanding industrial environments, cargo transportation, warehouse management, and commercial security applications.

3. Factory direct pricing with strict quality assurance

As a direct factory supplier, we provide highly competitive pricing advantages without intermediary costs. Customizable samples are available according to customer requirements to support product evaluation and testing. At the same time, we implement strict quality control procedures throughout the entire production process to ensure stable product performance, consistency, and reliability for global buyers.

4. Global export capability with flexible logistics solutions

With extensive international export experience and full export qualifications, we are able to provide flexible global shipping solutions. Customers can choose from sea freight, air freight, and land transportation based on delivery urgency and cost requirements. Our logistics support ensures safe, efficient, and timely delivery to different countries and regions worldwide.

5. Advanced anti-counterfeiting and traceability features

Our security seals support multiple anti-counterfeiting technologies, including laser engraving, unique serial numbering, and tamper-evident identification markings. Certain advanced models can also integrate RFID technology, enabling digital tracking, real-time monitoring, and improved supply chain visibility, which is widely used in logistics, high-value cargo, and regulated industries requiring strict traceability.

6. User-friendly operation for high-efficiency environments

Designed for convenience and efficiency, our sealing products can be easily operated with one hand and do not require any additional tools. This user-friendly structure significantly improves working efficiency, making them ideal for high-frequency sealing environments such as warehouses, distribution centers, inspection stations, and field operations where speed is essential.

7. Material advantages for different industrial applications

We offer a variety of material options to meet different application requirements. HDPE materials provide strong durability, chemical resistance, and cost efficiency for general-purpose sealing. PP materials offer excellent resistance to chemical degradation, making them suitable for pharmaceuticals and sensitive goods. Elastomer-blended plastics combine flexibility and resilience, bridging the performance gap between rigid plastics and rubber-like materials for specialized applications.

8. Lightweight structure with fast installation benefits

Compared with traditional metal seals, plastic security seals are significantly lighter in weight, helping reduce overall system load and transportation costs. Their ergonomic design supports quick and tool-free installation, which greatly improves assembly speed and operational efficiency while reducing labor costs, especially in automotive, aerospace, logistics, and industrial packaging industries.

9. Tamper-evident design with secure tracking capability

Most of our plastic security seals are designed for single-use applications with highly visible locking structures. Once the seal is broken, it cannot be re-secured without obvious damage, ensuring clear evidence of tampering. Additional security features such as laser-printed serial numbers, barcodes, color coding, and holographic identification enable full traceability and compliance for logistics, elections, pharmaceuticals, and financial sectors.

10. Customizable and adjustable sealing design for versatile use

Our pull-tight plastic seals feature adjustable locking lengths, allowing them to fit a wide range of container sizes and packaging requirements. This high adaptability makes them suitable for irregular cargo, utility meters, transport bags, and industrial equipment sealing. Their flexible design significantly improves usability across multiple industries, including logistics, retail, utilities, and security management.

1. Q：Who are we?
A: We are based in Shandong, China, start from 2012, sell to Mid East, South Asia, Northern Europe,Africa, North America, Western Europe. There are total about 200-300 people in our office.

2. Q：How can we guarantee quality?
A: Always a pre-printing sample before mass production;
Always final Inspection before shipment;

3. Q: what can you buy from us?
A: bolt seal,cable seal,plastic seal,meter seal,metal strap seal, etc.

4. Q: Why should you buy from us not from other suppliers？
A: 12 years experiences, 300 sets of models with different style , meet your different demands with fast delivery. All our material is environmental, we won many honors from government. Our goods are popular in 300 countries.

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