FIELD: production of aerosol container. SUBSTANCE: aerosol valve has stem with central opening and sealing gasket for stem. Hardness tester shows variation of sealing gasket hardness from relatively low value in inner part of sealing gasket extending in radial direction outside central opening to relatively high hardness value in outer radial part of sealing gasket. Sealing gasket comes into contact with part of valve body upper wall. In preferred embodiment, values indicated by hardness tester must gradually vary from inner radial part of sealing gasket to outer radial part of sealing gasket. EFFECT: enhanced reliability in operation. 14 cl, 3 dwg, 1 tbl
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