National Stock Number: 3950-21-877-5591
Federal Supply Class: 3950
National Item Identification Number: 218775591
Description: BREATHER
Detail: A mechanical device designed to permit a free flow of air into and out of an enclosure, usually used on engine crankcase, vehicular differentials and transmissions, pumps, compressors, and the like. See also CAP, VENT, FUEL STORAGE TANK. excludes VENTALATOR (as modified).
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