The Union Brass Seat Replacement 12638 is designed to replace the 12634 model, ensuring a perfect fit for your plumbing needs. Made from high-quality brass, this durable seat offers excellent resistance to corrosion and wear, making it ideal for long-term use. With precise dimensions tailored for compatibility, it ensures a reliable seal and optimal performance in various plumbing applications. This replacement part is essential for maintaining the efficiency of your fixtures, providing a seamless integration into existing systems. Upgrade your plumbing with this reliable component from Union Brass Manufacturing Co.