Series 9040L Straight Male BSPP x Male BSPP hydraulic long rigid bulkhead adapters, made from durable carbon steel, are an extended version of the standard 9040 model, offering longer connection options for hydraulic systems. These adapters feature British Standard Pipe Parallel (BSPP) threads, which are similar to NPT but with slight differences in thread pitch and form. Sealing occurs through metal-to-metal angled surfaces or a combination of metal and an O-ring, providing a secure, leak-proof connection. The female swivel BSPP connection, with a tapered nose flareless swivel, ensures a tight seal at the male connector’s cone seat. These adapters are ideal for applications requiring a longer, robust connection. Thread sizes are commonly expressed as fractional dimensions, with "G" representing a parallel thread, such as G 1/4 for BSPP 1/4-19. Thread sealants are recommended to secure the connections.