NO-SOUND
No-Sound is a next-generation polymer for creating an internal seal for problematic manhole covers.

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Although manhole covers are made of strong and durable materials, they are subject to wear and tear over time, heavy and intense traffic, and thermal expansion. This causes the internal core to deviate from the cover, resulting in the well-known annoying noise when vehicles pass.

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No-Sound allows you to create a custom internal seal, made on-site without removing any parts, thus attenuating not only the movement of the cover and the resulting noise caused by the knocking on the frame, but also the odors that escape from it.

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The installation takes only about 20 minutes, and the total cost is less than a quarter of that of installing a new manhole cover!