Our Series 9644-C Female BSPP Cap Adapters, made from high-quality carbon steel, are essential components designed to seal and protect the female BSPP (British Standard Pipe Parallel) threaded connections in fluid and gas systems. These caps are used to "cap off" or seal the ends of pipes, preventing leaks and contamination while ensuring a secure and tight closure. With their durable carbon steel construction, they offer exceptional strength and reliability, making them ideal for a variety of industrial applications. The BSPP connection style utilizes parallel threads to create a strong, leak-free seal, making these cap adapters a trusted solution for maintaining system integrity in hydraulic and pneumatic systems. BSPT (British Standard Pipe Tapered) male adapters are compatible with both BSPP and BSPT female ports.