The SEALFAST 4" FEM NPT X 4-1/2" M NST fitting is designed for reliable connections in fluid transfer applications. This fitting features a female NPT connection on one end and a male NST connection on the other, ensuring compatibility with various systems. Constructed from high-quality materials, it offers durability and resistance to corrosion, making it suitable for both industrial and commercial use. This fitting meets industry standards, providing a secure and leak-free connection for optimal performance.