A first seal is installed on one of a first body structure and a second body structure. The first seal has a first sealing surface and a first sealing projection. A second seal is installed on the other of the first body structure and the second body structure, the second seal having a second sealing surface and a second sealing projection. The first and second sealing surfaces and the first and second sealing projections are positioned such that with the second body structure in a closed position and adjacent the first body structure, the second sealing surface contacts the first sealing surface to form a first sealing line between the first and second body structures, and the second sealing projection contacts the first sealing projection to form a second sealing line between the first and second body structures, with the second sealing line spaced apart from the first sealing line.