The Flint & Walling Sub Cartridge is designed for 3.5-inch submersible pumps, featuring a durable construction from stainless steel 416. This cartridge is essential for maintaining the efficiency and reliability of your pumping system. It is engineered to provide a secure fit and optimal performance, ensuring that your pump operates smoothly under various conditions. The high-quality materials used in its construction offer excellent corrosion resistance, making it suitable for a wide range of applications, including agricultural and industrial use.