1/8-28 British Standard Pipe Parallel CouplingThe 1 8 28 British Standard Pipe Parallel Coupling is a hydraulic or pneumatic fitting designed to connect two pipes or hoses with British Standard Pipe Parallel (BSPP) threads. Its BSPP parallel thread design ensures a secure connection with a sealing washer or O ring, making it ideal for high pressure and critical fluid transfer systems. It provides a secure, leak proof, and high pressure resistant connection commonly used in fluid and gas transfer