The Series 5406-SS Straight Male NPT x Female NPT Reducer Bushing hydraulic adapters, crafted from high-quality stainless steel, are vital components designed to create secure and reliable connections for fluid and gas transfer in hydraulic systems while allowing for size adjustments between different pipe diameters. These adapters utilize the National Pipe Taper (NPT) standard, with tapered threads that form a durable, metal-to-metal seal through thread deformation when tightened. The nominal pipe size can be easily determined by measuring the thread diameter and subtracting 1/4". NPT connections have been a trusted solution in the U.S. for over 100 years, making them ideal for various applications. While best suited for single-assembly applications, these adapters are not recommended for frequent disassembly due to potential wear on the threads. The Series 5406-SS reducer bushings provide professionals with dependable, long-lasting hydraulic solutions, ensuring optimal performance in fluid transfer systems while accommodating varying pipe sizes.