FD35 Series hydraulic quick-connect couplings have a larger surface contact area for better holding strength in high-pressure applications. Self-sealing poppet valves provide high-pressure sealing for hydraulic tools, hydraulic rams, and work loading in construction, utilities, and industrial plants. The safety seal lock prevents accidental disconnection. The arc latch connection includes a series of arcs in the coupling body (socket or female end) that lock into the recesses on the plug (nipple or male end).