A sealing device (10) is configured to seal a fenestration (30) with a stent graft (26). In one example, the sealing device (10) has a biasing member (18) that is used to retain a sealing member (12) adjacent to the fenestration (30) to prevent blood from escaping from the stent graft (26). The biasing member (18) is configured to pull the sealing member (12) against the fenestration (30) to ensure a proper seal.
