Straight Female SAE J1926 ORB (O-Ring Boss) adapters are fittings designed for medium and high-pressure hydraulic systems to ensure leak prevention. The male side of the connection features a straight thread with an O-ring, while the female side has a straight thread and a machined surface with a chamfer where the O-ring seats. When the male and female parts are connected, the O-ring is compressed into the chamfer, creating a secure, leak-proof seal. This connection is known for its reliable, mechanical seal, making it an ideal choice for hydraulic systems requiring strong and durable connections, as recommended by the National Fire Protection Association (NFPA).