High Quality Plastic Seal for Airline Catering Reasonable Price Mailbox Security Seal （SL-43F）

The SL-43F plastic seal is a high-strength tamper-evident solution designed for securing shipping containers, trucks, trailers, tankers, and general cargo transport. It provides reliable tamper-evident security seals for logistics operations where strong anti-tamper protection is required, making it widely used as container seals, plastic container seals, and shipping container security seals.

Made from durable polypropylene (PP) with a built-in metal locking insert, the SL-43F delivers enhanced pull resistance and stronger seal security compared to standard plastic seals. This makes it suitable for heavy-duty applications where a reliable tamper proof seal is essential.

The SL-43F is a single-use tamper-evident seal that cannot be reopened without visible damage, ensuring clear tamper evident seals protection during transportation and storage. It supports customization with logos, serial numbers, and barcodes, helping improve traceability and security control across supply chains.

It is widely used in logistics, freight forwarding, warehouse security, postal services, cargo transport, rail cars, and storage containers, making it a versatile solution for Plastic Security Seals and security seals plastic applications worldwide.

Detail

Standard or Nonstandard: Standard
Style: Metal insert plastic seal
Size: 28.26*18.8mm

Fabrication process:300/400/500/700mm

Average Strength: 235N
Imprinting: Laser engraving/Hot stamping

Marking contents: Numbers,Letters,mark,bar codes

Product certificate:ISO Certification

Specification

1.plastic materials, easy for recycling

2.Pull tight locking mechanism

3.Removable by bolt/cable cutters, eyes protection is necessary

4.Thermal stamping or laser printing

5.Customer's company name logo, Sequential numbers

6.Bar code is available

FAQ

Q1: When should I choose SL-43F instead of a normal pull-tight plastic seal?

A: The SL-43F plastic seal is preferred when higher tensile strength and stronger anti-tamper performance are required, especially for trailers, tankers, containers, and heavy-duty logistics operations. It is widely used as container seals, plastic container seals, and shipping container security seals in demanding transport environments.

Q2: Why does SL-43F use a metal insert inside the plastic body?

A: The internal metal locking insert significantly improves gripping force, making it harder to loosen or bypass compared to standard plastic security seals, ensuring stronger seal security and better tamper proof seal performance.

Q3: Is SL-43F suitable for heavy-duty transport environments?

A: Yes, it is commonly used in industrial logistics, freight forwarding, and cargo transport where stronger sealing is required, providing reliable tamper-evident security seals for high-risk shipments.

Q4: Can SL-43F still show clear tampering if it is partially damaged?

A: Yes, once the seal is cut or broken, it becomes visibly non-reusable and shows irreversible damage, ensuring clear tamper evident seals and tamper proof security seals protection.

Q5: How does SL-43F improve shipment tracking?

A: Each seal can be marked with laser serial numbers, barcodes, or logos, helping verify shipment integrity during transit and supporting security labels and label security systems.

Q6: Does SL-43F require any tools for application?

A: No tools are needed. It is a manual pull-tight self-locking seal designed for quick application, ideal for container seal lock, truck seals, and shipping seals usage.

Q7: What payment methods are available for SL-43F orders?

A: We accept Paypal and T/T (bank transfer) for international customers.

Q8: What is the typical shipping method and delivery time?

A: We support sea freight, air freight, and express shipping, with standard delivery of 3–5 days, suitable for supplying high security seals for containers, container seals manufacturers, and shipping container seals globally.