Customized Number Plastic Seals Security Plastic Seal Tamper Evident 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 uses include truck doors, trailer doors, totes, valves, airline catering carts, coin bags, inner drum bags, storage bags, and any container with a hasp or loop structure.

Plastic seals are also commonly used to secure containers, tanker trucks, and courier packaging bags, preventing illegal opening or tampering during transit. Their single-use design and unique numbering system ensure that any forced opening leaves clear evidence, improving transportation security.

In courier and e-commerce logistics, single-use anti-counterfeit plastic seals (security tags) are widely used. With custom textures, serial numbers, or printed logos, they enhance brand recognition and increase consumer trust.

Utilities & Metering
In electric, water, and gas metering systems, plastic padlock seals (e.g., AC&M Type 7001) provide secure disposable locking with visible tamper indication. They are especially suitable for smart meters, where long-term durability and low maintenance are required.

Material Composition & Performance

Made from engineering-grade polymers:
Polypropylene (PP): Resistant to moisture, chemicals, and UV, suitable for outdoor use.
Acetal Copolymer: High strength and low friction, used in precision applications.
Polycarbonate: High impact resistance and transparency for inspection.
Plastisol: Soft liner used in metal caps, forming airtight seals in hot-filling.

Applications
Logistics & Freight: Securing trailers, containers, and cargo doors against theft.
Food & Pharmaceuticals: Induction seals and liners maintain sterility and freshness.
Banking & Security: Used on cash bags and evidence containers for chain-of-custody protection.

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

2.High-strength materials: Made of PP or engineering plastics, offering stable tensile strength

3.Factory direct sales with good price, Customizable samples available. Strict quality control.

4.With rich export experience and export qualifications, we can offer various transportation methods including sea, land and air.

5.Anti-counterfeiting and traceability: Supports laser engraving, unique serial numbering, tamper-evident markings; certain models integrate RFID technology for digital monitoring.

6.User-friendly operation: Sealing can be completed with one hand, tool-free, suitable for high-frequency operation environments.

7.Material Advantages‌
Common materials include:

‌HDPE‌: Durable, chemically resistant, and cost-effective for general-purpose sealing.
‌PP‌: Resists chemical deterioration, ideal for sensitive goods like pharmaceuticals.
‌Elastomer-blended plastics‌: Combine flexibility and recovery, bridging the gap between rigid plastics and flexible rubbers.

8.Lightweight & Easy to Install‌
Plastic seals are significantly lighter than metal alternatives, reducing overall system weight—especially beneficial in automotive and aerospace applications. Their design often allows for tool-free installation, speeding up assembly processes and lowering labor costs.

9.Tamper-Evident & Secure Tracking‌
Many plastic security seals are ‌one-time use‌ with visible locking mechanisms. Once broken, resealing without detection is nearly impossible. Features like ‌laser-printed serial numbers‌, ‌barcodes‌, ‌color coding‌, and ‌holograms‌ enable full traceability and audit compliance in logistics, elections, and pharmaceuticals.

10.Customizable & Adjustable Design‌
Pull-tight plastic seals can be adjusted to fit various container sizes, making them ideal for irregularly shaped packages or variable cargo. This adaptability enhances usability across different sectors—from securing voting machines to sealing utility boxes.

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