The Head O-Ring (Buna) for LC Thomsen #4 Pump is a critical component designed for optimal sealing and performance. Made from high-quality Buna rubber, this O-ring offers excellent resistance to oils, chemicals, and temperature variations, ensuring durability in demanding environments. With precise dimensions, it fits securely within the pump assembly, preventing leaks and maintaining efficiency. This product meets industry standards for pump components, making it a reliable choice for maintenance and repairs in agricultural and industrial applications.