The SEALFAST 2 1/2" M NST X 2" M NPT coupling is designed for reliable fluid transfer in various applications. Constructed from durable materials, this coupling ensures a secure connection with a male National Standard Thread (NST) and a male National Pipe Thread (NPT) interface. With a robust design, it meets industry standards for pressure and compatibility, making it ideal for both commercial and residential use. The dimensions provide versatility in fitting different systems, ensuring optimal performance in fluid handling.