The Zoeller Seal Cap Gasket is designed for 4" applications, specifically for model 6030-0203. Made from high-quality Buna material, this gasket provides excellent sealing capabilities, preventing leaks and ensuring optimal performance in your pump system. Its durable construction is resistant to wear and environmental factors, making it suitable for various applications. The gasket is easy to install, providing a reliable solution for maintaining the integrity of your pump system. This product meets Zoeller's quality standards, ensuring compatibility and long-lasting performance.