Serrated seals are metal PET strapping and PP strapping seals designed for plastic strapping applications where stronger grip and reduced slippage are required. As one type of strapping seals, serrated seals use an inner gripping surface to hold the plastic strap more firmly during sealing.
JUHONG supplies serrated seals in multiple widths for polyester strapping, polypropylene strapping, and other plastic strapping applications. Our serrated seals are available in galvanized and cold-rolled finishes, with custom sizes, OEM packaging, and factory-direct supply for industrial packaging use.
What Are Serrated Seals for Plastic Strapping?
Serrated seals are metal seals designed for PET strapping, PP strapping, and polyester strapping applications. Their inside surface is made to increase friction between the seal and the plastic strap, helping reduce slippage after crimping and improve joint security.
Also Known as PET Strapping Seals or Polyester Strapping Seals
![Manual PET Strapping with Buckle and Hand Tools(1)]( "Manual PET Strapping with Buckle and Hand Tools(1)")
In many markets, serrated seals are also described as PET strapping seals, PP strapping seals, or polyester strapping seals because they are mainly used with plastic strapping rather than steel strapping.
Designed for PET and PP Strapping Applications
Unlike steel strapping seals, serrated seals are intended for plastic strapping systems where extra friction is needed between the seal and the strap surface. This makes them suitable for PET and PP packaging work where anti-slip performance is important.
Different Gripping Patterns Inside Serrated Seals
Not all serrated seals use exactly the same inner gripping structure. Depending on the product design and market preference, the gripping pattern may be toothed, dotted, or textured to improve friction on the plastic strap surface.
![Toothed serrated seal detail for PET and PP plastic strapping applications]( "Toothed Serrated Seal for PET and PP Strapping")
![Dotted serrated seal detail for PET and PP strapping with anti-slip gripping pattern]( "Dotted Serrated Seal for PET and PP Strapping")
Toothed Serrated Seals for Stronger Mechanical Grip
Some serrated seals use a toothed or slanted serrated pattern inside the seal. This style helps bite into the strap surface more effectively during crimping and is commonly used where stronger grip is required.
Dotted Seals for PET and PP Strapping
In some markets, buyers may describe serrated seals as dotted seals because the inside surface uses dotted or point-style gripping marks. These dotted patterns are also designed to increase friction and help reduce strap slippage during sealing.
Textured Grip for Better Anti-Slip Performance
Whether the seal uses toothed or dotted gripping patterns, the main purpose is the same: to improve strap holding performance and reduce movement inside the seal after crimping.
Why Serrated Seals Are Used for PET and PP Strapping
The main function of a serrated seal is to improve grip on plastic strap surfaces. This helps make the joint more secure during transport, storage, and handling.
Serrated Inside Surface for Better Grip
The serrated inside surface increases friction between the seal and the plastic strap. This helps the seal grip the strap more effectively during crimping.
Helps Reduce Strap Slippage
One of the main benefits of serrated seals is reduced strap slippage. This is especially important in PET and PP strapping applications where smooth strap surfaces may otherwise move inside the seal.
A Practical Choice for Plastic Strapping Tools
Serrated seals are commonly used with manual plastic strapping tools for PET and PP packaging operations. They provide a simple and reliable sealing method for many industrial and warehouse applications.
How Serrated Seals Work with PET and PP Strapping Tools
Serrated seals are used after the overlapping strap ends are positioned. The sealer crimps the metal seal so that the inner gripping pattern holds the plastic strap surface more securely.
Used with Manual PET and PP Strapping Tools
Serrated seals are commonly used with manual strapping tools designed for PET and PP straps, such as a manual strapping sealer and a manual strapping tensioner. Proper tool matching helps achieve better sealing performance and more consistent joints.
Why Grip Matters in Plastic Strapping
Plastic straps can be more likely to slip inside the seal if the joint does not have enough friction. Serrated seals help solve this by increasing the contact grip between the seal and the strap.
Designed to Improve Joint Security
A properly matched serrated seal helps improve joint holding performance and supports safer load securing in plastic strapping applications.
Serrated Seal Specifications and Available Sizes
The correct serrated seal specification depends on strap width, strap material, and the strapping tool used. JUHONG supplies serrated seals in common sizes for PET and PP strapping systems.
Available Widths and Lengths
Our standard serrated seal range includes 13 mm, 16 mm, and 19 mm widths, with 26 mm and 28 mm seal lengths available for different application requirements.
How to Choose the Right Serrated Seal Size
A serrated seal should match the width of the PET or PP strapping being used. Proper size matching helps improve grip, reduce slippage, and support better sealing results.
Custom Serrated Seal Sizes Available
If your application requires non-standard dimensions or special packaging, JUHONG can support custom serrated seal solutions for industrial customers and distributors.
Galvanized and Cold-Rolled Serrated Seals for Plastic Strapping
Galvanized and cold-rolled serrated seals are both used in plastic strapping applications, depending on storage conditions, corrosion resistance needs, and cost preferences. JUHONG supplies both finish options to meet different PET and PP packaging requirements.
Galvanized Serrated Seals for Corrosion Resistance
Galvanized serrated seals provide improved corrosion resistance and are suitable for warehouse storage, export packaging, and humid working environments.
Cold-Rolled Serrated Seals for Cost-Effective Plastic Strapping
Cold-rolled serrated seals are suitable for many general PET and PP strapping applications where reliable grip and cost efficiency are both important.
Choosing the Right Finish for Your Strapping Application
The best finish depends on your packaging environment, storage conditions, and corrosion protection needs. Galvanized seals are often preferred for humid or export conditions, while cold-rolled seals are a practical option for general dry-use packaging operations.
Applications of Serrated Seals in PET and PP Packaging
Serrated seals are suitable for plastic strapping applications where stronger grip and reduced slippage are needed.
Palletized Goods and Carton Strapping
Serrated seals are commonly used for palletized goods, cartons, and unitized loads where PET or PP strapping is used to stabilize products during transport.
Warehouse and Export Packaging
In warehouse and export packaging, serrated seals help improve joint security and support more reliable PET and PP strapping performance.
Polyester Strapping for Medium-Duty Loads
In medium-duty packaging applications, serrated seals may be used with PET strapping where extra grip is required to reduce strap slippage and improve load stability.
Why Source Serrated Seals from JUHONG
JUHONG has long-term experience in manufacturing plastic strapping accessories and strapping seals. We focus on practical industrial performance, finish quality, and factory-direct supply for bulk buyers.
Factory-Direct Pricing for Bulk Orders
As a direct manufacturer, JUHONG can provide competitive pricing for distributors and industrial users while maintaining stable product quality.
Stable Dimensions for Better Tool Matching
Stable seal dimensions help improve consistency when using PET and PP strapping tools and support more reliable sealing performance.
OEM Packaging and Custom Specifications
We support custom sizes, private labels, OEM packaging, and bulk supply according to customer requirements.
Serrated Seal Manufacturing Process
JUHONG controls each key production step, including raw material slitting, feeding, stamping, forming, counting, and packing. Consistent production helps support stable seal dimensions and reliable industrial performance.
![Raw material slitting(1)]()
Raw material slitting
![Material Feed 2]()
Material Feed
![stamping 1(1)]()
Stamping
![Forming 1(1)]()
Forming
Serrated Seal Quality and Certificates
Quality control is important for serrated seals because seal shape, finish quality, and gripping-pattern consistency affect grip and joint reliability in PET and PP strapping applications. JUHONG applies standardized production and inspection processes to support stable quality and reliable supply.
![iso of juhong steel seals(1)(1)]()
ISO
![SGS of juhong steel seals]()
SGS
Serrated Seals Specification
| Strap Wdith | Seal L*T (length * Thickness) |
| in | mm | in | mm |
| 1/2 | 12.7 | 1.02*0.028 | 26*0.7 |
| 1.10*0.023 | 28*0.6 |
| 5/8 | 16 | 1.02*0.028 | 26*0.7 |
| 1.10*0.023 | 28*0.6 |
| 3/4 | 19 | 1.02*0.028 | 26*0.7 |
| 1.10*0.023 | 28*0.6 |
Serrated Seal Download Specification
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juhong packing materials Strapping Seals Brochure.pdf
Serrated Seal FAQ
Q1:What is a serrated seal used for?
A: Serrated seals are used for PET strapping, PP strapping, and polyester strapping applications where extra grip and reduced slippage are needed.
Q2: Are serrated seals used for steel strapping?
A: Serrated seals are mainly used for plastic strapping applications such as PET and PP strapping, not for standard steel strapping systems.
Q3:Are dotted seals and serrated seals the same?
A: In some markets, buyers may describe serrated seals as dotted seals when the inside surface uses dotted gripping marks. Both dotted and toothed styles are designed to improve friction and help reduce strap slippage.
Q4：What tools are used with serrated seals for PET or PP strapping?
A: Serrated seals are commonly used with manual plastic strapping tools, including a manual strapping tensioner to tighten the strap and a manual strapping sealer to crimp the seal securely.
Q5:What is the benefit of the serrated inside surface?
A:The serrated inside surface increases friction and helps the seal grip the plastic strap more securely, reducing slippage after crimping.
Q6：Can JUHONG provide custom sizes and OEM packaging?
A:Yes. We support custom sizes, packaging, and OEM solutions according to customer requirements.
Q7：Are samples available?
A:Yes. Samples can be provided for testing and evaluation.
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