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Eaton Hansen ring lock series quick disconnect pneumatic coupling have a unique interchange which designed for use with compressed air. High flow capacity. Push to connect with a ring lock sleeve. Ring lock design prevents accidental disconnection. To disconnect rotate sleeve 20 degrees. Standard body material: zinc trivalent plated steel. Standard seal material: Buna-N. Optional seal materials: silicone 138, FKM-143, EPDM-192. Applications and markets: shipyards, general pneumatics, mining, marine. Male end connection. Socket female coupling type. Maximum operating pressure: 300 pounds per square inch. Minimum burst pressure: 1200 pounds per square inch. Rated flow: 80 standard cubic feet per minute. 1-inch hex size. Measures 1-5/16-inches diameter by 2-11/32-inches length.