The SEALFAST 2 1/2" F NST X 2" M NPT coupling is designed for reliable fluid transfer in various applications. This coupling features a female National Standard Thread (NST) connection on one end and a male National Pipe Thread (NPT) connection on the other, ensuring compatibility with standard piping systems. Constructed from durable materials, it offers excellent resistance to corrosion and wear, making it suitable for both industrial and commercial use. The dimensions of this coupling allow for easy installation and secure connections, ensuring optimal performance in high-pressure environments. Ideal for fire protection systems, irrigation, and other fluid handling applications.