Strapping/Banding Tools/Trollies
16mm Polyester Crimper — Overview
A 16mm polyester crimper (also commonly called a sealer) is a manual strapping tool designed to lock overlapping polyester (PET) strapping by compressing a metal seal. It’s typically used as part of a manual strapping system alongside a separate tensioner: the tensioner pulls the strap tight around the load, and the crimper then forms the seal to hold that tension in place.
This product page may cover multiple configurations within the same family of strapping tools and accessories. The guidance below focuses on the general use and selection of a 16mm polyester crimping/sealing tool without assuming a specific strap thickness, seal type, or load rating beyond what is typical for this tool category.
Key Features
Manual seal crimping for PET strapping
Designed to crimp a metal seal over overlapping polyester (PET) strapping to create a secure mechanical joint.
Works as part of a two-tool workflow
Commonly paired with a compatible tensioner: tension first, then crimp the seal to lock the strap.
Optimised for 16mm strap systems
Sized for 16mm strapping setups, helping ensure the seal is formed consistently when used with the correct seals and strap.
Simple, portable, and power-free
A practical choice for warehouses, dispatch areas, and on-site packing where mains power or batteries aren’t ideal.
Repeatable sealing with correct technique
When used with the right seal and correct jaw placement, a crimper provides consistent compression for reliable holding performance.
- Manual crimping/sealing tool for 16mm polyester (PET) strapping systems
- Uses metal seals (mechanical joint) rather than heat/friction welding
- Typically used after tensioning with a separate tensioner tool
- Portable and low-maintenance for general packing and palletising tasks
- Ideal for warehouse and shipping areas where quick, dependable strapping is needed
Typical Uses
- Securing cartons, bundles, and pallet loads with polyester strapping
- General warehouse dispatch and outbound shipping preparation
- On-site strapping where a manual toolset is preferred
- Applications where a mechanical seal joint is required or preferred over welded joints
16mm Polyester Crimper — Full Product Guide
Manual strapping remains a dependable, cost-effective way to stabilise loads for storage and transport. A 16mm polyester crimper is a core component of many manual PET strapping systems, providing the final “lock” that holds strap tension once the strap has been tightened around the load. This guide explains how the tool is typically used, what it’s compatible with, and how to get consistent results in day-to-day packing operations.
How It Works
A polyester crimper forms a mechanical joint by compressing a metal seal around two overlapping layers of strap. In a typical workflow:
- Wrap the polyester strap around the load and overlap the strap ends.
- Use a compatible tensioner to pull the strap tight to the required tension.
- Slide a metal seal over the overlapping strap.
- Position the crimper jaws over the seal and compress fully to crimp the seal.
- Remove the tools and finish the strap end as required by your process.
This “tensioner + sealer” approach is widely used for manual plastic strapping systems and is especially common where portability and simplicity are priorities.
Materials and Construction
Crimpers are built to apply high compressive force through their jaws to deform a metal seal. While exact materials and specifications vary by manufacturer, the functional design is consistent: robust handles for leverage, hardened jaws for repeated crimping, and a jaw profile matched to the seal style used in the strapping system.
Because the tool’s job is to deform the seal reliably, correct alignment and full handle travel are essential. Using the correct seal type and size for your strap width is equally important for a secure joint.
Strap and Seal Compatibility (What to Check)
Before ordering or deploying a crimper in your packing area, confirm compatibility across the full strapping system:
- Strap width: This tool is intended for 16mm systems.
- Strap material: Designed for polyester (PET) strapping; some systems may also use polypropylene (PP), but always match the tool to your strap and seal specification.
- Seal type: Manual crimpers typically use metal seals (often serrated). Ensure the seal style is the one your tool is designed to crimp.
- Tensioner pairing: Use a tensioner intended for the same strap width and material so the strap is tensioned correctly before sealing.
If you’re unsure which seal or tensioner matches your setup, it’s best to confirm with your strapping supplier so the tool, seals, and strap work together as a system.
Floor Type Compatibility
As a handheld manual tool, a polyester crimper is not dependent on floor type. It can be used in typical warehouse environments including concrete floors, loading bays, and packing benches. The key practical consideration is having enough working space to tension and seal the strap safely around the load.
Health and Safety
Manual strapping involves stored energy in the strap and pinch points at the tool jaws. Good practice includes:
- Wear appropriate PPE such as gloves and eye protection, especially when cutting or finishing strap ends.
- Keep hands clear of the jaw area and the seal during crimping.
- Maintain stable footing and a clear work area to avoid slips while applying tension.
- Control strap recoil when releasing tensioners or cutting strap—strap ends can spring back.
- Inspect tools regularly for worn jaws, loose fasteners, or damaged handles that could affect crimp quality.
Always follow your site’s safe working procedures and any manufacturer guidance for the specific tool model in use.
Ideal Applications and Use Cases
A 16mm polyester crimper is commonly chosen for:
- Pallet stabilisation where PET strapping is used to secure cartons or mixed loads.
- Bundling of products, packs, or materials for easier handling and transport.
- General dispatch operations needing a reliable manual strapping method without powered equipment.
- On-site or mobile packing where portability matters (e.g., yard work, temporary packing stations).
If your operation straps high volumes daily, you may also consider powered or battery friction-weld tools; however, manual crimping remains a strong option for many teams due to its simplicity and low ongoing costs.
Maintenance, Cleaning and Care
Manual crimpers are generally straightforward to maintain. To keep performance consistent:
- Keep jaws clean so the seal seats properly and the crimp forms evenly.
- Check jaw wear—worn jaw profiles can reduce crimp quality and holding performance.
- Lubricate pivot points lightly if your maintenance routine allows, to keep handle action smooth.
- Store dry to reduce corrosion risk, especially in humid warehouse environments.
- Remove damaged tools from service and replace or repair as appropriate.
Case Study (Typical Warehouse Scenario)
A small-to-medium dispatch team shipping mixed cartons on pallets needs a dependable strapping method that doesn’t rely on batteries or compressed air. By using a manual tensioner to tighten 16mm PET strap and then sealing with a 16mm polyester crimper, the team can secure loads consistently at a packing bench or in a staging area. The process is easy to train, tools are portable, and the mechanical seal joint provides a clear visual confirmation that the strap has been sealed.
Who Is It For?
- Warehouses and distribution centres using manual PET strapping systems
- Shipping departments needing a portable, power-free sealing method
- Operations that prefer mechanical seals for process control or compliance
- Teams looking for a straightforward tool to complement an existing tensioner
Colours / Features Available
Tool appearance (including colour) can vary by manufacturer and batch. The most important “features” to match are functional: correct jaw profile for the seal type, compatibility with 16mm strap systems, and suitability for polyester strapping workflows.
Sizes Available
This listing is for a 16mm strapping system tool. If you also use other strap widths, many suppliers offer matching crimpers/sealers for additional widths. For strap itself, suppliers often provide multiple roll lengths and specifications; if your Sapphire listing includes strap options elsewhere, choose the strap width and type that matches your tensioner and seals.
Need help matching the full system?
If you’re selecting tools for a new setup, it’s best to confirm the strap width, strap material (PET), and the exact seal type used in your process so the tensioner, seals, and crimper all work together reliably.