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Sealing Jaws Manufacturing Australia

Quality Sealing Jaws and Sealing Plates for Many Industries

At Machine Knives Australia (MKA), we take pride in our expertise in manufacturing all types of sealing jaws, crimp blocks, rotary end seals, and sealing plates for a wide range of applications across Australia. We specialise in producing a diverse range of sealing jaws and plates tailored to meet your specific needs. Our extensive range includes sealing components for various machines, such as:

  • Vertical Form Fill & Seal Machines
  • Horizontal Flow Wrappers
  • Sachet Machines
  • Pouch Filling Machinery
  • Thermo Forming Equipment
  • Tray Sealing Machines
  • other Specialised Packaging & Sealing Applications

Custom Sealing Jaw & Plate Manufacturing

One of our key strengths lies in custom fabrication. We can craft sealing jaws and plates with any sealing pattern and profile you require. Whether it’s horizontal, vertical, criss-cross, diagonal, plain-faced, or designed to meet your unique specifications, MKA has you covered. We even offer sealing jaws with silicon-molded inserts for specific applications.


Our offerings extend to crimp blocks designed with different seals on the top and bottom of bags, making top openings effortless while ensuring a secure seal at the bottom. We also provide solutions for various hang cell and hole punch applications, as well as “easy open” requirements. Our sealing jaws cater to cold seal, constant heat, and impulse seal applications compatible with all major packaging machinery brands.

Sealing Jaws & Plate Reconditioning

MKA goes beyond manufacturing and offers reconditioning services for your existing sealing components. We can expertly re-cut sealing patterns and replating for sealing jaws, ensuring they perform optimally. If necessary, we can even modify the sealing pattern on your existing jaws to suit evolving needs.


For sealing plates used in tray sealing and thermoforming machinery, we can create custom profiles to match your specifications. Additionally, we provide recoating and reconditioning services for existing plates, helping you extend the life of your equipment.

The Benefits of Choosing Our Sealing Jaws

  • Superior Sealing Performance: Our sealing jaws provide strong, durable seals that ensure product integrity and protection during storage and transportation.
  • Enhanced Production Efficiency: With our sealing jaws, your production line will experience reduced downtime and increased throughput, helping you meet your deadlines with ease.
  • Cost-Effective: By investing in our high-quality sealing jaws, you reduce the likelihood of seal failures, saving on material waste and additional operational costs.

Sealing Jaw FAQs

See some common questions and answers below .

  • What are sealing jaws, and how do they work?

    Sealing jaws are essential components used in heat sealing machines to create strong, airtight seals between two materials, typically plastic films, pouches, or bags. The jaws apply both heat and pressure to the material’s edges, bonding them together securely. The type of sealing jaw used (such as hot bar, impulse, or constant heat) depends on the material and the specific requirements of the sealing application.

  • What materials can sealing jaws be used with?

    Sealing jaws are versatile and can be used with a variety of materials, including:


    • Plastic films (e.g., polyethylene, polypropylene, PVC)
    • Laminates (often used for food and medical packaging)
    • Foils (for moisture-sensitive products)
    • Non-woven fabrics (commonly in medical and hygiene products)
    • Flexible packaging materials

    The specific sealing jaw type chosen will depend on the material's thickness, composition, and required sealing strength.

  • What is the difference between hot bar and impulse sealing jaws?

    The key difference between hot bar and impulse sealing jaws lies in how heat is applied:


    • Hot Bar Sealing Jaws: These jaws maintain a consistent temperature throughout the sealing process, making them ideal for high-volume applications where uniform seals are critical.
    • Impulse Sealing Jaws: These jaws only heat up during the sealing process and cool quickly once the seal is made, making them more energy-efficient. They are typically used for thinner materials and in industries where precise, short-duration heat application is required.

  • How can I choose the right sealing jaw for my application?

    To choose the right sealing jaw, consider the following factors:


    • Material Type: Different materials require different types of sealing jaws (e.g., impulse jaws for thinner films, hot bar jaws for thicker materials).
    • Seal Strength: Determine how strong the seal needs to be based on the product's nature and storage conditions.
    • Production Volume: Higher-volume production may require durable sealing jaws designed for long, continuous use.
    • Energy Efficiency: If energy consumption is a concern, impulse sealing jaws are a more efficient option since they only use heat during the sealing process.

    Our team can help guide you through these considerations to select the best sealing solution.

Partner with MKA for Reliable Sealing Jaw Solutions

Ready to elevate your sealing process with high-quality, durable sealing jaws? Whether you're looking for a one-time order or need a long-term supplier, we’re here to meet your needs.

Contact Us Today to discuss your sealing jaw requirements and get a personalised quote. Our experts are ready to help you choose the perfect sealing jaw for your business!