The Superlok Series ICN Straight Male NPT x Male NPT Instrumentation Close Nipple hydraulic adapters, made from high-quality stainless steel, are designed to provide secure, leak-proof connections in hydraulic systems, particularly for instrumentation applications. These adapters feature male NPT (National Pipe Taper) threads, which rely on thread deformation to create a strong metal-to-metal seal when tightened, ensuring effective fluid and gas transfer. The nominal pipe size can be identified 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. Available in various lengths, these close nipple adapters are perfect for professionals seeking compact, durable, and reliable solutions for fluid and gas transfer in instrumentation systems.