The Zoeller Pump Company Washer, Impeller .411 Id SS is a precision-engineered washer designed for use in impeller applications. With an inner diameter of .411 inches, this stainless steel washer provides excellent durability and resistance to corrosion. It is essential for maintaining proper alignment and spacing in pump assemblies, ensuring optimal performance. This washer is compatible with various Zoeller pump models, making it a versatile addition to your maintenance supplies. Its lightweight design and high-quality material make it a reliable choice for enhancing pump efficiency and longevity.