Series 9000ES Straight Male BSPP x Male BSPP Nipple hydraulic adapters, made from carbon steel, feature British Standard Pipe Parallel (BSPP) threads and an elastomeric seal for enhanced leak prevention in hydraulic systems. BSPP connections are similar to NPT but have a different thread pitch, outer dimensions, and thread form, requiring thread sealant for proper installation. The captive seal, made of metal-to-metal angled surfaces or a combination of metal-to-metal and an O-ring, provides a secure connection. The female swivel BSPP connector uses a tapered nose flareless swivel to create a leak-tight seal when engaged with the male connector. BSPP connections are not interchangeable with NPT or NPSM due to differences in thread pitch and dimensions, and thread sizes are typically denoted by "G" for parallel threads. These adapters offer reliable, high-pressure sealing solutions for various fluid power applications.