Our straight Male NPT x Female NPT hydraulic adapters are essential fittings designed for secure connections in hydraulic systems, specifically for sealing pipes that transfer fluids and gases. Utilizing the National Pipe Taper (NPT) standard, which is widely recognized in the U.S. for tapered threads, these adapters provide a reliable metal-to-metal sealing design achieved through thread deformation. This means that when the male and female threads are tightened together, they form a tight seal that prevents leaks. The nominal pipe size can be determined by measuring the thread diameter and subtracting 1/4". While NPT connections are ideal for single assembly applications, they are not recommended for frequent disassembly, as this can lead to wear on the threads. These adapters are perfect for professionals seeking dependable and efficient hydraulic solutions in various applications, ensuring optimal performance and safety in fluid transfer.