High-quality material: Made of high-quality material, it resists rust even with long exposure to water, and it is not easy to deform when using different cleaners or bleach. Wide compatibility: Suitable for bathtubs, balconies, floor drains, sinks, shower drains, bathrooms, toilets, and toilet drains. Permanent magnetic suspension technology: When water enters the floor drain, the gravity of the water opens the seal at the bottom and the dripping water becomes unhindered. After the water is shut off, the seal closes automatically due to gravity. Good sealing: The silicone sealing ring of the floor drain backflow preventer has strong toughness, which makes it perfectly fill tiny gaps and block all air. Benefits and performance: Durable construction with reliable backflow prevention, easy to maintain, and designed to work with common cleaning agents without losing sealing performance. Use scenarios: - In a bathroom floor drain during heavy rainfall to prevent backflow and keep the area dry. - In balcony or outdoor drain to stop water backflow and protect surrounding surfaces. - In kitchen sinks or showers to maintain a seal when not in use and reduce sewer gas entry.