In an alkaline dry battery, a sealant comprising grease (7) with a worked penetration of from 175 to 475 is disposed between an opening end of a metal case (1) and a peripheral end of the outer ring portion (5b) of a sealing body (5). This sealant, comprising the above grease, differs from a conventional sealant in being usable without using an organic solvent. This sealant is also capable of preventing creeping of an electrolyte between the metal case (1) and the sealing body (5).