The EATON CORPORATION 5400-S5-8 is a refrigeration adapter coupling featuring a half-female self-sealing steel construction. It operates at 1750 PSIG with a burst pressure rating of 5200 PSI. The unit has a 7/8"-20 threaded inlet and 1"-20 UNEF threaded outlet, designed for temperatures ranging from -40 to +250 degrees Fahrenheit. The coupling maintains exceptional sealing performance with refrigerant leakage below 1/4 ounce per year.