Metal Seals for Strapping/Banding
13mm x 25mm Lapover Metal Seals are a dependable, widely used sealing option for steel strapping (also known as steel banding) where the strap ends overlap and are mechanically crimped to lock the tensioned strap in place. Designed for use with a compatible sealing tool (commonly described as a single-notch sealer for lapover seals), these metal seals help create a secure joint for bundling, palletising, and stabilising loads during storage and transport.
On configurable product pages like this one, the same seal style may be offered in different pack quantities. The key point is that this listing covers the lapover/overlap seal format in the 13mm x 25mm size, intended for use with steel strapping.
Key Features
Lapover (overlap) seal design:
Lapover seals are used when the two ends of the steel strap overlap. The seal is placed over the overlap and then crimped with the correct tool to form the joint.
For steel strapping / banding:
These seals are specified for steel strapping applications, making them suitable for heavier-duty packaging and load restraint tasks where steel strap is preferred.
Compatible with single-notch sealing tools:
Other supplier listings for this same seal size and style describe lapover seals as being used with a single-notch sealer. Always match the tool to the strap width and seal type.
Consistent sizing for repeatable results:
The 13mm x 25mm format is a common, standard lapover seal size for 13mm steel strapping, helping operators maintain consistent sealing performance when paired with the correct strapping and sealer.
Bulk packaging options:
Lapover seals are typically supplied in bulk pack quantities (often 1,000 or 2,000 depending on supplier), supporting efficient use in packing benches and despatch areas.
- Seal type: Lapover / overlap metal seal
- Seal size: 13mm x 25mm
- Strap compatibility: Steel strapping / steel banding
- Tooling: Use with an appropriate lapover seal sealer (commonly single-notch type)
Typical Uses
- Securing steel strapping around cartons, crates, and timber packs
- Bundling metal stock, pipes, profiles, and other long goods
- Pallet unitisation where a strong, tamper-resistant strap joint is required
- Warehouse and despatch operations using steel banding systems
13mm x 25mm Lapover Metal Seals — Full Product Guide
Choosing the right seal is essential for safe, reliable steel strapping. The seal must match the strap width, the seal style (lapover vs other seal types), and the sealing tool used on the line. This guide explains what lapover seals are, how they’re typically used, and what to consider when specifying them for your operation.
How It Works
In a lapover joint, the steel strap is tensioned around the load and the strap ends are overlapped. The metal seal is then positioned over the overlapped section. A compatible sealer tool crimps the seal, deforming the metal so it grips the strap layers and locks the joint. This creates a mechanical connection that helps maintain strap tension and keep the load contained.
Materials and Construction
Lapover seals are metal components designed to be crimped during application. Their purpose is to provide a strong, consistent interface between the sealing tool and the steel strap. Because the seal is deformed during sealing, it is intended for single-use applications: once crimped and removed, it should be replaced with a new seal for the next strap.
Strapping System Compatibility
To achieve a reliable seal, match these elements:
- Strap width: This product is specified as 13mm width compatible.
- Seal style: Lapover/overlap seals are used where strap ends overlap under the seal.
- Sealer tool: Use a tool designed for lapover seals and the correct strap width. Supplier references for this seal size describe use with a single-notch sealer.
If you are unsure which tool you have (or which seal style it requires), check the tool’s specification for the seal type and strap width before ordering.
Load and Application Considerations
Steel strapping is commonly selected for applications where higher strength and rigidity are needed. Lapover seals are often used in industrial packaging environments where loads may be heavy, dense, or have sharp edges. The overall performance of the strap joint depends on the correct combination of strap, seal, and tool, as well as correct operator technique.
Health and Safety
- Wear appropriate PPE: Steel strapping can have sharp edges and stored energy under tension. Use suitable gloves and eye protection.
- Use the correct tool: A mismatched sealer can lead to incomplete crimps or unreliable joints.
- Inspect the seal: After sealing, visually check that the crimp is properly formed and consistent with your tool’s expected seal pattern.
- Handle cut strap ends carefully: Cut ends can be sharp and may spring back.
Ideal Applications and Use Cases
These lapover metal seals are a practical choice for many steel banding tasks, including:
- Manufacturing and fabrication: bundling bar, rod, tube, and profiles
- Timber and building materials: securing packs for storage and transport
- Warehousing and distribution: pallet stabilisation and load containment
- Export packing: where robust strapping is required as part of the packing specification
Maintenance, Cleaning and Care
The seals themselves require no maintenance, but the sealing tool and tensioner used with steel strapping should be kept in good working order. A poorly maintained tool can affect seal quality. Follow your tool manufacturer’s guidance for cleaning, lubrication, and inspection intervals.
Quality Checks (Practical Tips)
- Confirm the seal type: Lapover seals are different from other seal styles; ensure your process uses an overlap joint.
- Confirm strap width: Use 13mm strap with 13mm seals.
- Check the crimp: The seal should be evenly formed with no obvious misalignment.
- Standardise operator technique: Consistent strap overlap length and tool positioning improves repeatability.
Case Study (Typical Scenario)
A despatch team regularly ships dense, heavy items that benefit from steel strapping. By standardising on a 13mm steel strapping system and using matching 13mm x 25mm lapover seals with the correct sealer, the team can apply consistent seals across shifts, reduce rework caused by mismatched consumables, and maintain a tidy, efficient packing station with bulk-packed seals ready to hand.
Who Is It For?
- Warehouses and despatch departments using steel strapping
- Manufacturers bundling heavy or rigid products
- Export packers and logistics teams needing robust load restraint
- Any operation that uses lapover/overlap sealing with a compatible sealer tool
Colours / Features Available
Metal seals are typically supplied in a standard metal finish. If your operation requires a specific coating or finish, confirm availability before ordering.
Sizes Available
This listing is for 13mm x 25mm lapover metal seals. If you use a different strap width, you will need the corresponding seal size and a compatible sealer tool for that width and seal style.
Need help matching seals to your strapping?
If you can share your strap width, strap type (steel), and the model/type of your sealer tool, we can help confirm compatibility.