The Superlok Series IHRN Straight Male NPT x Male NPT Instrumentation Hex Reducing Nipple hydraulic adapters, made from high-quality stainless steel, are designed to provide secure, leak-proof connections for fluid and gas transfer in hydraulic systems. These adapters feature male NPT (National Pipe Taper) threads, which use a metal-to-metal sealing design that relies on thread deformation to form a strong seal when tightened. The nominal pipe size can be determined by measuring the thread diameter and subtracting 1/4". NPT connections are ideal for single assembly applications, but are not recommended for frequent disassembly due to potential wear on the threads. The reducing nipple design allows for transitioning between different pipe sizes, making these adapters a versatile solution for various hydraulic applications. Available in varying lengths, these adapters ensure reliable performance in fluid transfer systems while offering flexibility in size adjustments.