The Series FS2404 Straight Male ORFS x Male NPT hydraulic adapters, made from durable carbon steel, provide secure, leak-proof connections in hydraulic systems. The ORFS (O-ring Face Seal) side uses an O-ring that compresses between the fitting’s flat face and the mating fitting or tube to create a reliable, elastomeric seal, ensuring leak-tight performance. These fittings are built to the SAE J1453 standard and typically use Buna-N or Viton O-rings for high-pressure applications. On the other side, the male NPT (National Pipe Taper) connection features tapered threads that rely on thread deformation to create a metal-to-metal seal, ideal for fluid and gas transfer. The nominal pipe size can be determined by measuring the thread diameter and subtracting 1/4". While NPT connections are perfect for single assembly applications, they are not recommended for frequent disassembly due to potential wear on the threads. These adapters are ideal for professionals seeking efficient, durable, and high-performance hydraulic solutions.