The Series 2503-B 45-Degree MJIC x Male NPT Rigid adapters, made from durable brass, are designed for fluid power systems, particularly in low-pressure applications. These adapters feature male JIC (Joint Industry Council SAE J514) fittings with 37° tapered seats, which form a secure mechanical seal when the male flared seat meets the female coned seat. The male NPT (National Pipe Tapered) thread is widely used for sealing fluid and gas transfer pipes, offering a reliable, leak-proof connection. It is crucial not to mix SAE 37° and SAE 45° fittings, as their different seat angles can cause leakage. Careful measurement of seat angles is essential to ensure a safe and effective connection.