Abstract: A self-draining, leak-resistant boat window comprising a frame body having a continuous mounting flange for engagement with the hull of the boat, and a spigot wall connected with the flange and adapted to extend through an opening in the hull. A transparent molded plastic window pane is hingedly carried on the body; latches are provided to secure the pane in a closed position. The mounting flange has a peripheral groove into which a rib portion of an extruded, hollow sealing gasket is pressed. The rib portion has longitudinal barbs which frictionally engage the walls of the groove, thereby holding the gasket captive without cement. The gasket is oval in cross-section and is stretched an extent when installed on the window to thereby prevent buckling at the corners. When it is pressed between the flange and window pane it flattens a considerable amount by virtue of its oval shape, forming a tight seal.