Durable seal ring for pool cleaners keeps your pool clean and free of debris. The advanced ribbed rubber material maximizes suction and provides a secure seal for easy, effective cleaning. Key size details: inner diameter 110 mm (4.4 in); outer diameter 420 mm (5 in). This wide coverage helps ensure installation safety and proper fit for compatible cleaners. Fin seal design offers multiple functions: it simplifies maintenance and supports strong cleaning performance. The multifunction design helps keep your pool clear with less effort. Wide compatibility: delivers optimal cleaning without sacrificing suction or movement. The seal fits a broad range of cleaner models for efficient, reliable cleaning. Use scenarios: - Replace worn or damaged seals on compatible pool cleaners to restore suction and cleaning efficiency. - Install on a new cleaner or upgrade to improve fit, seal reliability, and performance. - Use across different pool sizes and debris loads to maintain consistent cleaning performance with various models.