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Case Study: Custom-Made Silicone Rubber Plugs for the Pumps and Filters Market

At AFAC, our expertise in silicone rubber mouldings allows us to cater to a wide range of industrial needs. A prime example of our capability is the custom-made silicone rubber plugs we recently designed for a client in the pumps and filters sector.

The Product

The silicone rubber plugs were specifically engineered to address a unique challenge: masking an area around a hole while also covering a hexagonal bolt (referred to here as a “Hexer”) that protrudes slightly from the surface. The design features a deeper recess, tailored to accommodate and completely cover the bolt, ensuring a snug fit and optimal masking during manufacturing processes.

Key Features

  • Deeper Recess: Allows the plug to accommodate protrusions such as bolts or screws, providing a seamless cover.
  • Convenient Handle: Integrated at the top for easy insertion and removal, enhancing user convenience and efficiency in high-paced industrial settings.
  • Tail Design: A slight tail at the end of the plug not only helps in pulling it to ensure a tight fit but also aids in its removal, making the process smoother and faster.

The Impact

These custom-designed plugs significantly improved the client’s production process by providing an effective solution for a complex problem. The precise fit and the ability to withstand industrial conditions meant that our client could rely on these plugs to perform consistently, reducing downtime and increasing overall efficiency.


This project exemplifies AFAC’s dedication to innovation and quality in the production of custom silicone rubber mouldings and plugs. We understand that each industry has unique needs, and our goal is to provide bespoke solutions that enhance production capabilities and achieve high levels of satisfaction.

Whether you’re in the pumps and filters market or any other industrial sector, AFAC has the expertise to deliver custom solutions tailored to your specific requirements. Get in touch with us today to see how we can assist in enhancing your production process with our custom silicone rubber products.

For more information on our full range of capabilities, please complete the form below or contact our team directly on 0345 094 0993. At AFAC, we’re committed to pushing the boundaries of what’s possible with silicone rubber mouldings.

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