Container labeling – What the container door reveals
Containers are indispensable for freight transport worldwide. They enable standardized processes, rapid handling, and maximum security . But what at first glance appears to be a simple metal box bears a wealth of information on its door . This container labeling is crucial for identification, tracking, and safe use .
In the following we show which information can be found on a container , how you can check a container number and what terms such as container marking , maximum weight or dangerous goods marking mean.
The container number – identity of a container
Each container is assigned a globally unique container number . It consists of four letters (usually the owner code), followed by six digits and a check digit .
Example : ABCD 123456 7
Check digit : Used to verify the correctness of the number. This allows the container number to be verified and prevents incorrect transmissions.
Benefit : The number makes it possible to identify the container worldwide and track its location – similar to the license plate number on a car.
Anyone who wants to search for a container number or understand its meaning will find the key to container identification here.
Labeling and technical information
In addition to the number, the container label contains other important information:
Maximum weight (Max Gross Weight) : Indicates the total weight of the container plus cargo that may not be exceeded.
Tare (empty weight) : The container's own weight – important for calculating the permissible load weight. This is especially important for the empty weight of a container truck.
Payload : Resulting from maximum weight minus empty weight.
This information is essential for shippers, freight forwarders and customs authorities to calculate the load correctly and ensure security.
Container marking and designations
Containers are not only identified by their number , but also carry other container markings:
ISO codes : Standardized abbreviations for container types (e.g. 22G1 for a 20-foot standard container).
Container designations : These include design, size and equipment.
Colors : The colors on the container can also have meaning – they often represent the operator or specific purposes.
Our High Security Seal (HSS) container security seal offers maximum protection for your cargo. This high-security seal is ideal for use on containers and ensures reliable sealing against unauthorized opening. It comes with a user-friendly sticker that allows for easy identification and tracking of the sequential number. Our container seals are "H" (ISO/PAS 17712:2013) standardized and C-TPAT compliant. The seals are each 87 mm long and have an 8 mm bolt diameter. Trust the HSS seal for maximum security and integrity of your transports . Technical data of the High Security Seals Type : High Security Seal (HSS) – High security seal with sticker Total length : 87mm Bolt diameter : 8mm Material : Hardened steel, plastic coating Standards & Certificates : ISO/PAS 17712:2013 (H), C-TPAT compliant Marking : Consecutively numbered + additional sticker Use : Disposable seal, only to be opened by destructive means Advantages of the container security seal ✅ Maximum security : Tamper protection through stable high-security seal ✅ Unique identification : combination of consecutive number and sticker ✅ Quick application : Easy to apply without special tools ✅ Internationally applicable : Certified according to ISO/PAS 17712:2013, C-TPAT compliant ✅ Flexible use : As a container seal for sea containers, trucks, rail freight and warehouses Areas of application of security seals Sandax security seals are universally applicable and are used primarily in the following areas: Container transport in international sea freight Truck and rail transport Swap bodies in road freight transport Storage and depot sealing High security seals ( export packaging ) are mandatory , especially for exports to North America and Asia . Therefore, anyone looking to purchase container seals should look for certified and C-TPAT-compliant products . Conclusion With Sandax container seals with stickers, you're relying on a tested and internationally recognized solution for securing cargo . Whether for sea, rail, or road transport – this high-security seal ensures maximum control and security .
Wire length : 300 mm Wire : 3.5mm Color : blue consecutive number range
Steel cable seal according to ISO 17712/2013
Unit=500 pieces Customs tariff number: 83099090
The High Security Seal (HSS) container seal from Sandax offers maximum security and tamper protection for your container transport . Certified according to ISO 17712:2013, it meets the highest international security standards and guarantees reliable protection of your valuable cargo during transport by road, rail, and sea . The unit of our container seals is 10 pieces each, there are 250 seals in a carton and 20,000 seals on a pallet. The two-part Sandax container security seal is made of galvanized steel and ABS plastic . It is sequentially numbered and complies with ISO/PAS 17712:2013 , C-TPAT compliant , features an anti-rotation design, 8mm steel diameter, and 87mm length. Custom laser engraving is available upon request and for orders of 1,000 or more . Product details at a glance: Material : High-quality steel with robust plastic coating Color : Standard yellow for high visibility (other colors on request) Certification : ISO 17712:2013 “H” (High Security) – recognized by customs authorities worldwide Tamper protection : Single use, irreversible and not reusable Marking : Unique serial number for easy traceability and documentation Easy handling : Quick and tool-free installation for efficient work Technical data for our container seals: Seal type : Container seal/bolt seal Material : steel bolt with ABS plastic housing Total length : 87mm Bolt diameter : 8mm Color : yellow Labeling : consecutive numbering (identical on both seal parts) Approvals : ISO 17712:2013 (E) / C-TPAT – 'H' compliant High Security Seal, EU Regulation 2454/93, Article 386, Annex 46A, HM Revenue & Customs High Barrier Class 1, US In-Bond Security Why choose Sandax container seals? ✅ Reliable protection – The HSS seal effectively prevents unnoticed tampering and protects your goods from theft and unauthorized access. ✅ International Recognition – Accepted by international customs authorities, ideal for worldwide export and import. ✅ Easy to use – Installation in seconds without additional tools, reduces working time and costs. ✅ Secure documentation – The unique serial number ensures complete documentation for your safety and quality management systems. ✅ High visibility – The eye-catching coloring allows for quick visual inspection of the integrity during incoming goods and customs clearance. Sandax container seals are ideal for: Container transport (sea containers, rail containers, trucks) Air freight and forwarding logistics Dangerous goods transport Customs clearance and international cargo security Protection of storage and storage containers Important NOTE :
The container seals are intended for single use. Once opened or removed, they are no longer usable, allowing tampering to be reliably detected. Rely on proven quality and the highest security standards – with Sandax’s High Security Seals (HSS), your shipments are optimally protected. Any questions or individual requests ?
Contact our customer service – we will be happy to advise you on larger quantities, special color requests, or individual requirements. Order now and seal your containers securely !
Secure your cargo reliably with our Container Lashing System, which offers stability and flexibility in one. This high-quality securing system , specially designed for use in containers, is the ideal solution for safely transporting your goods by sea, rail, or road . With a thickness of 32 mm and a height of 2.7 meters, this lashing system is specially developed for high cube containers. Rely on our product to protect your valuable cargo and ensure worry-free and always safe delivery. Ideal for logistics companies and freight forwarders who place the highest value on reliability and safety.
The flexible container lashing system consists of two horizontal straps, each 3 m long (2 x 3 m in total) , made of 32 mm wide, high-strength polyester webbing . Designed specifically for use in high cube containers, these 2.7 m high straps reliably secure your cargo and effectively prevent it from slipping or falling out during transport . Whether by truck, train, or ship, this container lashing system provides stable retention across the entire loading width . Ideal for logistics companies and freight forwarders who place the highest value on reliability and safety . Technical features of the Container Lashing System 2x3m System : 2 horizontal straps, each 3 m long Material : High-tear 32 mm polyester strap Application : Flexible, continuously height adjustable – ideal for containers with variable internal height Height : 2.7 meters – suitable for high-cube containers Color : Dark webbing with robust fixing points Your benefits at a glance ✅ Container Lashing 2x3m – effective protection against lateral slipping in containers ✅ Container Lashing System – modular and flexible: Two straps can be placed individually ✅ Securely & quickly attached – straps can be easily moved if necessary ✅ Suitable for sea, rail & road – robust 32 mm strap withstands even extreme conditions ✅ Value for money – top quality, affordable price, fast delivery Typical applications of container lashings Container loading : Flexible load securing with 2 horizontal straps – ideal for changing loading heights Truck and rail transport : Prevents lateral movement or collapse of the load Sea freight : Suitable for calm and rough conditions – also effective with sea chutes Logistically flexible use : empty containers, swap bodies, stacking traffic – convenient system integration Application in four steps Attach straps – mount the horizontal strap at any height in the container (e.g. with airline rails or fixed points) Build tension – tighten securely to ensure stable hold of the load Load & secure – align your load, check and secure again Adjust or loosen – adjust or remove the system flexibly depending on the loading situation
Secure your cargo reliably with our Container Lashing System , which offers stability and flexibility in one. This high-quality securing system , specially designed for use in containers, is the ideal solution for safely transporting your goods by sea, rail, or road. With a thickness of 32mm and a height of 2.4 meters, our lashing system guarantees that your goods are firmly and safely stowed in the container under all conditions. Rely on our product to protect your valuable cargo and ensure a worry-free and always safe delivery . Ideal for logistics companies and freight forwarders who place the greatest value on reliability and safety.
Secure your cargo reliably with our Container Lashing System, which offers stability and flexibility in one. This high-quality securing system , specially designed for use in containers , is the ideal solution for safely transporting your goods by sea, rail, or road. With a thickness of 32mm and a height of 2.4 meters, our lashing system guarantees that your goods are firmly and safely stowed in the container under all conditions. Rely on our product to protect your valuable cargo and ensure a worry-free and always safe delivery . Ideal for logistics companies and freight forwarders who place the greatest value on reliability and safety .
This cargo net is the perfect solution for securing cargo on trailers . It is made of durable polypropylene and is strong enough to hold any load securely without tearing. The 45mm mesh size makes it suitable for a wide range of load sizes . With a thickness of 3mm, this cargo net is the perfect choice for all your transport needs .
The price is for a full box of 72 pieces.
Absorex desiccant bags offer an innovative solution for effectively combating moisture problems in storage and transport areas . Each bag measures 125 x 215 mm, making them ideal for use in small spaces.
These desiccant bags are packaged in high-quality, robust packaging that offers both durability and protection from external influences . At the heart of the product is a powerful blend of calcium chloride and starch, which together can achieve an exceptional absorption capacity of up to 250% of their own weight. This property makes Absorex desiccants a powerful moisture inhibitor .
For optimal results, we recommend using 32-36 units in a 20-foot container and 64-72 units in a 40-foot container. This ensures comprehensive moisture control and effectively protects your stored goods.
The desiccant chains are conveniently packaged in cartons of 72, with each pallet containing 40 cartons. This results in an impressive total of 2,880 units per pallet. Thanks to the integrated hook, each bag can be easily and securely attached.
Ideal for use in sea freight containers, warehouses, archives and other areas where moisture is a problem, the Absorex desiccant bags 1x100g with hook offer a reliable and efficient solution for preserving the quality of your products and materials .
Whether during sea container transport , in the warehouse , or on the truck – moisture is one of the most common causes of transport damage . The Absorex desiccant chain with 8 125g bags is a proven solution for controlled dehumidification in containers to effectively prevent mold, rust, packaging damage, and label detachment . Highly effective desiccant for containers and warehouses – protects your goods from moisture damage This desiccant for containers is based on calcium chloride and starch – a combination that achieves an absorption capacity of up to 250% of its own weight compared to conventional desiccants . This means that even in extreme climatic conditions, a significant amount of moisture is extracted from the air and converted into gel in a short time. Thanks to the sturdy integrated hook, the chain can be easily hung on eyelets, container rails, or shelving systems . The perforated packaging ensures that moisture is quickly absorbed but reliably contained .
Technical data at a glance Product type : Desiccant chain (8 x 125 g bags) Total weight : 1,000 g
Dimensions: approx. 1820 mm x 125 mm (L x W) Active ingredients : Calcium chloride + starch Absorption capacity : up to 250% of its own weight Cover material : Tyvek – METPET / ADH / Blown PE Mounting : Hook for hanging in container or storage room Application temperature : Suitable for ambient temperatures between -5 °C and +70 °C Manufacturer : Absorex Packaging units : 12 pieces per carton / 40 cartons or 480 pieces per pallet Your advantages with the Absorex desiccant chain ✅ Extremely high moisture absorption : The desiccant chain absorbs air humidity in the shortest possible time – ideal for long container transports over sea or in humid storage environments.
✅ Safe protection for your goods : Prevents corrosion, mold growth, packaging damage and the softening of labels – a must for sensitive goods such as machinery, textiles, electronics or paper goods. ✅ Optimized for container logistics : With its practical suspension, the product is particularly suitable as a desiccant in containers – without contact with the ground and easy to remove without leaving any residue. ✅ Easy to use : No tools, no preparation required – simply attach the hook, and you're done. Especially suitable for freight forwarders, importers, and warehouse logistics. ✅ Safe and environmentally friendly : The active ingredients are non-toxic and the casing is stable, tear-resistant and permeable – for maximum safety during use. Typical applications of Absorex desiccants Container transport (20-ft / 40-ft sea containers) :
Protection against “container rain” in the event of climatic changes and high humidity. Warehousing and long-term storage :
Securing sensitive products in halls, cold stores or unheated warehouses. Packaging industry & export logistics :
Ideal companion in export packaging, boxes, containers and shrink hoods. Caravan, boat & seasonal storage :
Preventing mildew and condensation on seasonally used vehicles or equipment. Application recommendation according to container size 20 foot container : 6-8 pieces 40 foot container : 8-10 pieces The exact number depends on the type of loading, packaging material, temperature range and transport time . What is calcium chloride as a desiccant? Calcium chloride is a hygroscopic substance that absorbs moisture particularly efficiently and converts it into a gel. Combined with a carrier material such as starch , it securely binds the liquid and prevents re-evaporation . This makes this desiccant particularly suitable for container transport , where constant humidity poses a real threat.
Buy desiccants from Sandax – safe, certified, proven Sandax stands for well-thought-out solutions in the areas of load securing , protective packaging and container logistics.
If you're looking for a powerful, ready-to-use, and safe desiccant , the Absorex Desiccant Chain 8 x 125 g with Hook is the ideal choice. Benefit from quality that professionals rely on – worldwide.
The price is for a full box of 24 chains. With the Absorex Desiccant Chain 3x100g, we offer an innovative solution for effective humidity control in a wide variety of storage and transport environments. Each chain comprises three 100g units that efficiently absorb and bind moisture . With its compact dimensions of 125 x 215 mm, this desiccant can be used flexibly in a wide variety of spaces.
The packaging is made of high-quality materials, ensuring durability and resistance to external influences . Inside is a powerful blend of calcium chloride and starch, known for its outstanding moisture absorption . This combination enables an impressive absorption rate of up to 250% of its own weight.
For optimal results, we recommend using 32-36 units in a 20-foot container and 64-72 units in a 40-foot container. The desiccant chains are supplied in convenient cartons of 24 units each , with a total of 40 cartons per pallet. This results in a total of 960 chains per pallet. The integrated hooks on each desiccant chain facilitate installation and allow for flexible placement within the application area .
Ideal for use in sea freight containers, warehouses, and other locations where effective moisture control is critical, Absorex desiccant chains provide a reliable solution to protect your goods from moisture and the associated damage.
The price is for a full box of 24 chains. With the Absorex desiccant chain 3x125g we offer an innovative solution for effective humidity control in a wide variety of storage and transport environments . Each chain comprises three 125g units that efficiently absorb and bind moisture . With its compact dimensions of 125 x 215 mm, this desiccant can be used flexibly in a variety of rooms. The packaging is made of high-quality material , which guarantees durability and robustness against external influences. Inside is a powerful mixture of calcium chloride and starch , which is known for its outstanding moisture absorption. This combination enables an impressive absorption rate of up to 250% of its own weight . For optimal results, we recommend using 32-36 units in a 20ft container and 64-72 units in a 40ft container. The desiccant chains are supplied in practical boxes of 24 units, with a total of 40 boxes per pallet. This results in a total of 960 chains per pallet. The integrated hooks on each desiccant chain facilitate installation and allow for flexible placement within the application area. Ideal for use in sea freight containers, warehouses, and other locations where effective moisture control is critical , Absorex desiccant chains offer a reliable solution to protect your goods from moisture and the associated damage .
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Dangerous goods labeling on the container
If a container is used for hazardous goods , special hazardous goods marking is required. This consists of internationally valid hazard labels and symbols that clearly indicate the type and risk of the cargo. This ensures safety during transport by sea, rail, and road.
Why container labeling is so important
The explanation of container labeling shows that every number and symbol has a function. It serves not only to identify the container but also to ensure compliance with international safety and logistics standards .
Correctly legible and complete labeling enables:
Worldwide container tracking and management
Safe transport through correct weight determination
Clarity when handling dangerous goods
Uniform communication between shippers, freight forwarders and authorities
Conclusion on container labeling
Container labeling is far more than a mere formality—it's the international "identity card system" for transport containers . Anyone looking for an explanation of the container number or wanting to understand the container labeling quickly realizes: Without this information, global trade in its current form would hardly be possible.
Sandax GmbH supports its customers in loading containers safely and in compliance with regulations . Because only correct labeling ensures safety. In this context, please also note our hazardous goods labels in our shop.
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