The Tuthill Retrofit Kit (Model 400KTG9137) includes a high-quality diaphragm EPDM seal designed for optimal performance in fluid transfer systems. This kit is essential for maintaining the integrity of your equipment, ensuring leak-free operation and extending the lifespan of your system. The EPDM material is resistant to a wide range of chemicals and temperatures, making it suitable for various applications. This retrofit kit is easy to install and complies with industry standards, providing a reliable solution for upgrading your existing systems.