Sepio Australia Bolt Seals

Bolt Seals Manufacturer in Australia


Container Security

Freight Forwarding and Logistics

Warehouse Security

Cash Boxes and Bags, Utility Meters


Bolt seals are security devices to secure shipping containers and truck trailers to prevent unauthorized access and tampering during transportation. Bolt seals comprise two main components: a high-strength metal bolt and a hardened steel or plastic locking mechanism. The bolt is inserted through the locking mechanism and tightened using a special-purpose tool like a seal press to apply a bolt seal. Once secured, the High Security Bolt Seal forms a barrier that can only be broken by physically cutting or breaking the seal, providing evidence of tampering or unauthorized access. Bolt Seals for Shipping Containers are often marked with unique identification numbers or barcodes, allowing easy tracking and identification. They help provide evidence of tampering and allow verifying their authenticity.


Tamper-evident design to detect unauthorized access

One-time use to ensure zero exploitation

Delivers high security with tamper-evident features

Heavy-duty materials providing high security and resistance to tampering or manipulation

Unique identification numbers or barcodes for traceability and accountability

Withstand harsh conditions, including extreme weather, vibration, and physical stress

Difficult to remove without leaving visible signs of tampering.

Facilitates compliance with regulatory requirements and international standards

Cost-effective solution providing reliable security without extensive investments


These are heavy-duty seals designed to provide maximum security. Requires special tools to seal and open and resists tampering.
They are designed specifically to secure shipping containers.
This type of bolt seal incorporates a cable into its design. Cable seals with bolts provide flexibility and ease of use while maintaining high security.
Equipped with a plastic body with a metal locking mechanism, plastic bolt seals are an economical option for securing cargo.
Padlock seals are small padlocks used to secure utility meters. They can be customized with serial numbers and designed to be tamper-resistant, with hardened steel shackles and bodies.
Bolt Seal for Cargo Containers featuring a large bolt and a heavy-duty locking mechanism are suitable for securing shipping containers.
Indicative bolt seals provide a visual indication that someone has tampered with the cargo.


The proper way of using bolt seals is choosing the right type of bolt seal in keeping with the level of security required and cost considerations. Also, don’t forget to note down the seal's unique identification number or barcode, along with other relevant information such as the seal type, date of application, and container or shipment details for tracking.

What Are the Common Materials Used to Manufacture Bolt Seals?

Bolt seals are usually manufactured using a combination of materials to ensure strength, durability, and security. The common materials used in the manufacturing of bolt seals are hardened steel, metal alloys, plastic, rubber or polyurethane and high-strength polymers.


Shipping and Logistics

Customs and Border Control

Manufacturing and Industrial

Freight and Transportation

Energy and Oil Industry

Pharmaceuticals and Healthcare

Banking and Financial Services




Secure bolt seals are typically made using a combination of metal and plastic components. The manufacturing process for secure bolt seals encompasses design and engineering, materials selection, metal fabrication, plastic injection molding, assembly, customization and marking, and quality control.

Some recommendations for bolt seal selection, use, and application best practices include:
 Selecting high-quality and appropriate types of bolt seals
 Inspecting seals before using them can ensure they are not damaged or tampered with and their unique identification numbers are intact and match the documentation
 Following the manufacturer’s instructions for applying the seal properly and ensuring it is tightly secured
 Recording the unique identifiers and numbers on each bolt seal and matching them with corresponding cargo or container information
 Documenting seal information, including the seal number, date of application, container or cargo details, and personnel responsible for sealing and opening the container to help establish a clear chain of custody
 Securing the storage and controlling the access to bolt seals to only authorized personnel
 Regularly auditing and inspecting the seals and the sealing process for compliance with the SOP and signs of tampering, identifying potential
 Training personnel involved in the handling and application of bolt seals on proper procedures, security protocols, and the importance of maintaining seal integrity
 Assessing your security measures and seeking ways to improve them

Secure Boltseals find use in various industries and applications where there is a need to ensure the integrity and security of cargo or equipment. Some common uses of secure bolt seals include shipping containers, trailers, trucks, and railcars carrying valuable or sensitive cargo, customs and border control, and safeguarding high-value goods during transportation and storage. Additionally, they find use in securing pipelines, valves, and meters by the energy and oil industry, government and military equipment, ammunition, sensitive documents, and storage facilities, and luxury goods or sensitive products by the retail industry.
Secure bolt seals are typically designed for single-use applications and are not intended to be reused. Once a bolt seal is applied and locked into place, it cannot be opened or removed without causing visible damage to the seal. Reusing a bolt seal would compromise its effectiveness as a security measure since it would be difficult to determine whether the seal had been tampered with or replaced.
Bolt seals comprise two main components: a high-strength steel bolt and a hardened steel locking mechanism incorporating tamper-evident features. The bolt is inserted through the locking mechanism, and the items for sealing and tightened to secure them. The locking mechanism includes a locking chamber enclosing and securing the bolt. The locking chamber often contains unique markings or numbers that serve as identification that are recorded for documentation purposes. A Secure Bolt Seal has tamper-evident features to show clear signs of tampering if someone tries to remove or manipulate them. Security features may include anti-spin construction, tamper-evident markings, high-strength materials, and one-time use. Authorized persons need to use appropriate tools to remove the bolt seal to avoid damage to the container or cargo. Removal typically involves cutting or breaking the seal, which results in visible damage.
A Bolt Container Seal provides a visible and reliable method of securing cargo containers and vehicles, deter tampering and theft, and maintain the integrity of goods during transit. It also help companies comply with security and safety standards, ensure smooth customs clearance and minimize delays, and comply with the terms of insurance coverage during transportation.
A high-quality secure bolt seal can last several months to a few years. However, once a seal is broken or tampered with, it should be replaced, regardless of its remaining lifespan. Factors affecting the lifespan of secure bolt seals include exposure to heat, cold, moisture, UV radiation, corrosive and harsh environments, and rough handling.
Bolt seals can often be customized to some extent, depending on the manufacturer and the specific requirements of the shipping company or regulatory authorities. Customization options may include unique identification numbers, barcodes, company logos, or specific color codes. Customized bolt seals can aid in tracking, identification, and brand recognition.
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