Patent ID: 7523964

Claim:
A ventilation duct system, comprising: a first duct component; a second duct component; and a sealing gasket configured to form a seal between overlapping ends of the first and second components, the sealing gasket comprising: an annular gasket body disposed about one end of the first duct component, the gasket body having, in cross-section and in a relaxed state, a generally flat radially outer wall, a radiused radially inner wall opposite the radially outer wall and a pair of opposite circumferential edges, the radially inner wall being radiused substantially between the pair of opposite circumferential edges; a first annular sealing flange extending radially outwardly from and generally perpendicular to the radially outer wall and positioned effectively at one of the circumferential edges; a second annular sealing flange extending radially outwardly from and generally perpendicular to the radially outer wall and positioned axially spaced from the opposite circumferential edge; and an annular bead extending radially inwardly from the radially inner wall of the gasket body.