Internal O-Ring Installation Machine Series by OHRMANN

Assembling internal O-rings can be a complex process, often more challenging than handling external ones. With nearly 40 years of experience, we offer a range of internal O-ring assembly machines designed to simplify this task. Explore various options with all levels of automation to find the perfect solution for your production needs.

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Overview: O-Ring Installation Machines for Internal O-Rings & Other Seals

  • All levels of automation
  • Different levels of integration
  • Feeding, assembly & testing
  • Proven systems from the world leader in seal assembly

Internal Seal-Ring Machines with Manual Feeding

Experience the simplicity of internal O-ring assembly with our manual feeding machines—the perfect introduction to automatic seal and O-ring installation. Manually load the seal and product into the machine, and complete the assembly with a single button press in under one second. This efficient solution streamlines the complex process of internal O-ring assembly, helping you enhance productivity with ease.

  • Internal O-Ring Assembly Machine OI 10

    Introducing the OI 10, our most proven internal O-ring installation machine. By automating installation tasks, it has already saved significant amounts of valuable human labor time.

  • Bespoke Machines with Manual Feeding

    Custom solutions engineered to your specific needs. For large/small rings, small quantities etc.

Internal Seal-Ring Machines with Semi-Automatic Feeding

Our semi-automatic machines provide efficient automation for seal feeding and assembly processes. They feature automated sorting and feeding of O-rings and seals, with manual intervention required only for loading and unloading the products. This setup simplifies the assembly of internal O-rings.

  • Internal O-Ring Machine OI - 250/400

    This semi-automatic standalone machine features automatic seal feeding specifically designed for internal O-rings.

  • Bespoke Machines with Semi-Automatic Feeding

    Custom solutions for special sizes and complex cases—we can design assembly machines and feeding systems to meet your specific requirements.

Internal Seal-Ring Machines with Fully-Automatic Feeding

  • Rotary Indexing Machine for Internal Seals

    Our rotary machines are a perfect fit for high-speed installation of assemblies that contain seal-rings.

  • Complex, Interlinked Systems

    Experience our highest level of automation! Combine a wide range of processes beyond seal assembly into one solution: oiling, testing, laser marking, joining, greasing, measuring, printing, packaging, and much more.

  • Robotics

    You need more flexibility? Automation with robots is open to change.

Integration Modules for Internal O-Rings

Our integration modules allow machine manufacturers and industrial automation providers to integrate world class seal assembly technology into their solutions.

  • Internal Seal Assembly Module OI 100

    This modular solution seamlessly adds advanced seal assembly capabilities to your systems, enhancing efficiency and performance with tried-and-tested technology.

  • Internal Seal Assembly Module OI Station

    The OA Station delivers enhanced versatility for your assembly needs. It adeptly handles seals and O-rings with more complex specifications.

Installation of Internal O-Rings:

  1. Positioning: Internal O-rings are placed inside a component, such as within a bore, groove, or cavity that requires sealing.
  2. Compression: The O-ring needs to be compressed appropriately to fit into the internal space without deforming or causing damage. It’s important to ensure the O-ring maintains its shape for an effective seal.
  3. Protection from Twisting: Care must be taken to prevent the O-ring from twisting or rolling during installation, which can compromise its sealing ability. Gentle and even pressure should be applied.
  4. Avoiding Damage from Sharp Edges: Ensure that the O-ring does not come into contact with sharp edges or threads during installation, as this could cause cuts or tears.
  5. Installation: Finally the O-ring is guided into position as smoothly as possible

Internal vs. External O-Ring Assembly

While external O-rings are more commonly used and generally simpler to install, internal O-rings pose unique challenges that require specialized solutions—especially in automated assembly processes. Internal O-rings are essential for sealing applications within pistons, valves, and housings, ensuring the proper functioning of internal components.
The installation of internal O-rings is inherently more complex due to their placement inside components, which often involves deeper and less accessible locations. This complexity can make automated assembly difficult without the right equipment. In contrast, external O-rings are often used in applications like screw connections, flanges, or fittings where they seal around the outside of components and are easier to install.
Despite the prevalence of external O-rings in many industrial applications—largely because they serve as static seals and are straightforward to assemble—the need for efficient internal sealing solutions is significant. The frequency and type of O-ring used ultimately depend on the specific application and design of the components involved.
Our internal O-ring assembly machines are specifically designed to address these challenges, offering precise and efficient solutions for assembling internal seals, even in deep or hard-to-reach locations. With our technology, the complexities of internal O-ring installation become manageable, enhancing the reliability and efficiency of your production processes.

  • Overview: All products

    Our complete portfolio on one page.

  • External O-Ring Installation Machines

    External? Internal? We’ve got you covered!

CONTACT / REQUEST

Are you looking for a solution for the assembly of seals? If you can already provide us with the following information, you will help us to advise you in the best possible way:

  • Assembly task (internal or external seal)
  • Components
  • Seal specification (material, cross-section, dimensions)
  • Production volume or cycle time
  • Desired level of automation (manual, semi-automatic, fully automatic)

We are happy to advise you and look forward to hearing from you!