The Series 2404-LL Straight Male JIC x Male NPT Extra Long hydraulic adapters, made from durable carbon steel, are engineered to provide enhanced connectivity in hydraulic systems with a longer overall length than both the standard 2404 and 2404-L Series. Featuring a male JIC (Joint Industry Council) end, these adapters utilize a 37-degree flare seating surface and parallel threads, as defined by SAE J514, making them ideal for reliable hydraulic connections in fluid power systems. The seal is established by contact between the male flared seat and the female coned seat, ensuring a robust mechanical connection. The male NPT (National Pipe Taper) connection on the other end employs tapered threads to create a secure seal for fluid and gas transfer through thread deformation, forming a strong metal-to-metal connection. The nominal pipe size can be identified by measuring the thread diameter and subtracting 1/4". While NPT connections are suitable for single assembly applications, they are not recommended for frequent disassembly due to potential wear on the threads. These extra-long adapters are perfect for professionals seeking efficient and dependable hydraulic solutions across a variety of applications.