An outer container for use in an aerosol dispenser and having a longitudinal axis, said outer container comprising: an open top having an opening and having a crimp ring therearound, a shoulder disposed in spaced relationship below said crimp ring, a lower neck portion depending from said crimp ring to said shoulder, sidewalls depending below said shoulder, and a closed end bottom joined to said sidewalls, said crimp ring having an upper surface and a lower surface opposed thereto, said upper surface and said lower surface being joined by an outer surface, an inside diameter surface being opposed to said outer surface, said outer surface of said crimp ring having at least one longitudinally oriented vent having a divergent cross section divergently extending from said upper surface to said lower surface, said vent diverging from said upper surface to said lower surface, whereby said at least one vent has a first cross section at said upper surface and a second cross section at said lower surface, said second cross section being greater than said first cross section; wherein the outer container further comprises a valve cup in the opening of the outer container, the valve cup having a center hole, an annular platform radially outward from and adjacent the center hole, an annular inner skirt wall radially outward from and contiguous the platform, an annular bottom wall adjacent and radially outward from and contiguous the inner skirt wall, and an annular outer skirt wall radially outward from and contiguous the bottom wall, an annular top wall radially outward from and contiguous the outer skirt wall, and an annular outer wall radially outward from and contiguous the top wall, wherein an inner surface of the outer wall seals against the outer surface of the crimp ring; characterized in that the annular outer wall comprises one or more circumferentially spaced holes through the outer wall, which allow for exhausting of propellant and/or product therethrough. an open top having an opening and having a crimp ring therearound, a shoulder disposed in spaced relationship below said crimp ring, a lower neck portion depending from said crimp ring to said shoulder, sidewalls depending below said shoulder, and a closed end bottom joined to said sidewalls, said crimp ring having an upper surface and a lower surface opposed thereto, said upper surface and said lower surface being joined by an outer surface, an inside diameter surface being opposed to said outer surface, said outer surface of said crimp ring having at least one longitudinally oriented vent having a divergent cross section divergently extending from said upper surface to said lower surface, said vent diverging from said upper surface to said lower surface, whereby said at least one vent has a first cross section at said upper surface and a second cross section at said lower surface, said second cross section being greater than said first cross section; wherein the outer container further comprises a valve cup in the opening of the outer container, the valve cup having a center hole, an annular platform radially outward from and adjacent the center hole, an annular inner skirt wall radially outward from and contiguous the platform, an annular bottom wall adjacent and radially outward from and contiguous the inner skirt wall, and an annular outer skirt wall radially outward from and contiguous the bottom wall, an annular top wall radially outward from and contiguous the outer skirt wall, and an annular outer wall radially outward from and contiguous the top wall, wherein an inner surface of the outer wall seals against the outer surface of the crimp ring; characterized in that the annular outer wall comprises one or more circumferentially spaced holes through the outer wall, which allow for exhausting of propellant and/or product therethrough.