A resealable container assembly comprising: a metal container that is closed at a first end so as to be configured for holding an associated fluid at a pressure of at least 621 kPa (90 psi) therein, and having an opening at a second end, the opening having an inner diameter through which the associated fluid is introduced into and poured from the container, the container having thread portions adjacent the second end along an external surface thereof; a metal cup-shaped cap having an end wall, and a perimeter sidewall extending from the end wall, wherein the cap includes one of (i) roll on pilfer proof thread portions, or (ii) circumferentially spaced lugs, the roll on pilfer proof thread portions or lugs dimensioned for selective twist-on/twist-off receipt relative to the thread portions of the container; and a seal adhered to an inner surface of the end wall of the cap, characterized in that the seal includes a continuous axial region extending outwardly from the cap end wall a larger extent than a remainder of the seal, the axial region of the seal having a radially outer, external surface dimensioned and configured for sealing engagement with a smallest inner diameter of the container opening, such that the external surface of the axial region seals the container along the smallest inner diameter of the container opening, whereby the seal formed between the axial region and the smallest inner diameter of the container opening maintains the associated fluid within the container at pressure (i) while holding the cap on the container with less than 45 kg (100 pounds) of down force during formation of the roll on pilfer proof thread portions, or (ii) when the cap is twisted to place the circumferentially spaced lugs into threaded engagement with the container using an on-torque value measured in newton-meters that is less than 0.0565 times a diameter of the cap measured in millimeters (using an on-torque value measured in inch-pounds that is less than one-half a diameter of the cap measured in millimeters). a metal container that is closed at a first end so as to be configured for holding an associated fluid at a pressure of at least 621 kPa (90 psi) therein, and having an opening at a second end, the opening having an inner diameter through which the associated fluid is introduced into and poured from the container, the container having thread portions adjacent the second end along an external surface thereof; a metal cup-shaped cap having an end wall, and a perimeter sidewall extending from the end wall, wherein the cap includes one of (i) roll on pilfer proof thread portions, or (ii) circumferentially spaced lugs, the roll on pilfer proof thread portions or lugs dimensioned for selective twist-on/twist-off receipt relative to the thread portions of the container; and a seal adhered to an inner surface of the end wall of the cap, characterized in that the seal includes a continuous axial region extending outwardly from the cap end wall a larger extent than a remainder of the seal, the axial region of the seal having a radially outer, external surface dimensioned and configured for sealing engagement with a smallest inner diameter of the container opening, such that the external surface of the axial region seals the container along the smallest inner diameter of the container opening, whereby the seal formed between the axial region and the smallest inner diameter of the container opening maintains the associated fluid within the container at pressure (i) while holding the cap on the container with less than 45 kg (100 pounds) of down force during formation of the roll on pilfer proof thread portions, or (ii) when the cap is twisted to place the circumferentially spaced lugs into threaded engagement with the container using an on-torque value measured in newton-meters that is less than 0.0565 times a diameter of the cap measured in millimeters (using an on-torque value measured in inch-pounds that is less than one-half a diameter of the cap measured in millimeters).