Custom Color 20cm Fixed Length Clothing Hang Tag Garment Seal Tight Tamper-proofing Safety Label for Shoes Handbags

Plastic seals are protective devices mainly produced from engineering-grade plastics, developed to prevent counterfeiting, theft, and tampering. They are extensively applied across different industries and usage scenarios, with the primary purpose of ensuring the integrity and security of goods during transportation or application. A plastic seal is a single-use self-locking device. Its color options are highly diverse, supporting customization of colors as well as logo printing. The size specifications are also available in multiple variations. Plastic seals feature adjustable lengths and provide anti-counterfeiting and anti-tampering functions. They are mainly used in logistics transportation, medical and storage sectors, as well as for specialized sealing of video and beverage products, and as plastic tags for bags and garments.

Transportation & Logistics
Truck and container seals: Manufactured from polypropylene, these high-strength seals (with breaking strength up to 55 lb) are used to secure cargo doors and fuel tanks. Versions with numbering and laser printing enable traceability.

Submarine hatches: Large plastic seals produced from Nylatron™ MC 907 PA6 are used to seal acrylic spheres in manned submersibles, complying with strict marine safety standards without requiring lubrication. Plastic seals are tamper-evident or sealing devices primarily made from plastic materials, designed to protect containers, equipment, or systems against unauthorized access, contamination, or leakage. They are widely applied across industries due to their durability, cost efficiency, and traceability.

Plastic seals are widely used across various industries to ensure product integrity, tamper evidence, and operational safety, with key applications in food, pharmaceuticals, energy, transportation, and high-precision scientific sectors. Typical uses include securing truck doors, trailer doors, totes, valves, airline catering carts, coin bags, inner drum bags, storage bags, and any container equipped with a hasp or loop system.

Plastic seals are also widely used to secure containers, tanker trucks, and courier packaging bags, preventing unauthorized opening or tampering with goods during transportation. Their single-use structure and unique numbering system ensure that any manual removal leaves clear visible evidence, thereby improving transportation security and cargo protection.

In courier parcels and e-commerce logistics, single-use anti-counterfeiting plastic seals (also known as security tags) are commonly adopted. Featuring custom textures or printable company logos, they help enhance brand recognition while strengthening consumer trust and product authenticity.

Utilities & Metering
In electric, water, and gas metering systems, plastic padlock seals (such as AC&M Type 7001) provide secure, disposable closure with clear tamper indication. These are especially suitable for smart meters with remote reading, where inspections are infrequent and require long-lasting, deterioration-resistant sealing performance.

Material Composition & Performance
Made from engineering-grade polymers such as:
Polypropylene (PP): Resistant to moisture, chemicals, and UV exposure; widely used in outdoor and transportation environments.
Acetal Copolymer: Provides high strength and low friction; suitable for reusable or high-cycle applications.
Polycarbonate: Offers strong impact resistance and clarity; ideal for inspection-friendly sealing.
Plastisol: A soft liner used in metal caps for glass containers, forming airtight seals during hot-filling processes.

Applications
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

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