Abstract: An interactive sealing arrangement includes a sealing member operatively disposed across a gap between a first wall and a second wall that is moveable relative to the first wall and at least partially defines a storage chamber. A passage extends through the second wall and is in fluid communication with the sealing member such that a portion of an associated fluid at an elevated pressure within the storage chamber can interact with the sealing member and thereby urge at least a portion of the sealing member into abutting engagement with the first wall. A pressurized fluid storage system for containing a quantity of an associated fluid at an elevated pressure level that includes such an interactive sealing arrangement and a method of sealing are also included.