The Adaptall Series SS9008 Straight Male BSPT x Male NPT hydraulic adapters, made of stainless steel, are used to connect pipes for fluid and gas transfer in hydraulic systems. NPT (National Pipe Taper) connections use tapered threads that rely on metal-to-metal sealing for a strong, leak-proof fit. These connections are ideal for single-use, permanent installations but are not suitable for frequent disassembly due to wear on the threads. BSPT (British Standard Pipe Taper) connections also feature tapered threads, but they differ in thread pitch and require thread sealants for secure sealing. This adapter allows for a seamless connection between BSPT and NPT fittings in hydraulic systems, ensuring reliable, durable performance.