Accordingly, a surgical portal apparatus for accessing a cavity is provided. The surgical portal apparatus includes a portal member defining a longitudinal axis and having a longitudinal passageway therethrough for receiving a surgical object, and an adjustable seal disposed within the longitudinal passageway. The adjustable seal includes a first configuration wherein the adjustable seal defines a first opening configured for receiving a first surgical object having a first diameter. The first opening defines a first central axis therethrough. The adjustable seal includes a second configuration wherein the adjustable seal defines a second opening configured for receiving a second surgical object having a second diameter. The second opening defines a second central axis laterally offset from the first central axis. The apparatus further including an adjustment member mounted within the portal member and positioned to intersect the longitudinal passageway to engage the first or second surgical object and move relative to the portal member. The adjustment member is operatively connected to the adjustment seal to move the adjustable seal to the first configuration upon engagement with a first surgical object to thereby facilitate passage of the first surgical object through the adjustable seal.