Learn the key differences between internal and external shipping container locks. Compare pros and cons, and discover which type of lock is best for securing your containers or trucks.
🔐 Choosing the Right Lock for Your Shipping Container or Truck
When it comes to securing shipping containers or cargo trucks, choosing the right type of lock is crucial. Your decision doesn’t just come down to lock quality—it also involves lock placement. Should you go with an internal lock or an external lock?
At Seguratainer, we offer both internal and external lock solutions designed to meet a wide range of security and operational needs. Below, we break down the key differences, advantages, and disadvantages of each type of lock to help you make the best decision for your cargo security.
The following text discusses internal and external locks in general, not only Seguratainer features.
🔒 What Are Internal Shipping Container Locks?
Internal locks are installed inside the container, meaning the locking mechanism is fully protected and mostly hidden from external view. Only the activation component (e.g., a keyhole or sensor) is accessible from the outside.
Common activation methods include:
Digital inputs via wired keys
Wireless readers like Seguratainer’s NFC antenna
(Less recommended) traditional keyholes
✅ Benefits of Internal Locks:
Maximum discretion – not visible to the outside world, which adds a layer of stealth.
Extra protection – locking points are shielded by the container doors themselves.
Permanent security – once installed, the container stays locked even without external add-ons.
⚠️ Drawbacks:
Longer installation time – internal locks require a fixed setup and more detailed installation, especially if you're aiming for long-term use.
🛠 Example:
Seguratainer Slam Locks – Available with 2 or 4 locking points, these internal locks are built for durability and protection, and can be installed with DIY-friendly instructions.
🔐 What Are External Shipping Container Locks?
External locks are mounted outside the container and are completely visible when the container is closed. These are the more traditional types, including padlocks and other visible locking systems.
✅ Benefits of External Locks:
Quick and easy – fast installation and removal, ideal for temporary or flexible security needs.
Highly visible deterrent – a strong external lock can discourage tampering or theft.
Portable – external locks can be used across different containers or vehicles.
⚠️ Drawbacks:
Weather exposure – these locks are more vulnerable to corrosion, damage, or wear from harsh outdoor environments and impacts during transport. Note: Seguratainer locks come with an anti-corrosion coating to remain intact even after years in harsh weather.
🛡 Example:
Seguratainer Claw Locks – These robust external locks feature 2 or 4 locking points, armoured steel construction, and electrophoretic paint coating for excellent corrosion resistance.
🧩 What About External Fixed Locks?
If you're looking for something that’s both external and fixed, Seguratainer offers a modern twist on the classic lock box: the Seguratainer Lock Box Lock.
This smart, all-in-one external lock combines the convenience of external access with the strength and stability of a fixed system—perfect for those who prefer the lock box format for securing shipping containers.
🔗 Learn more here: https://www.seguratainer.com/products/lock-box-lock
🧭 Which Lock Type Is Best for You?
Choosing between internal and external shipping container locks depends on your specific needs:
Feature Internal Locks External Locks
Visibility Hidden Visible
Installation Time Longer Quick
Portability Fixed Reusable
Weather Resistance Protected Exposed
Theft Deterrent Stealthy Visual deterrent
🔎 Explore the Full Range of Seguratainer Container Locks
Whether you’re securing a shipping container, cargo truck, or a mobile storage unit, Seguratainer offers a complete selection of high-security container locks to fit every need.
👉 Browse all Seguratainer container and truck locks here: https://www.seguratainer.com/products
Or contact us directly.