Tilt-in/tilt-out window assembly with improved weatherseal gasket

A tilt-in/tilt-out window assembly comprising:

• a sash having at least a horizontally extending lower frame member, said frame member having a horizontal longitudinal axis and a first end and a second end;
• a pivot bar integral with at least said first end and adapted to extend horizontally beyond said first end, said pivot bar being parallel to said longitudinal axis of said lower frame member and having a cross-section and a first end;
• at least one vertically erect jamb having a vertical longitudial axis and an integrally formed vertically extending channel, said channel having an opening opposing said sash, said jamb being perpendicular and adjacent to said sash lower frame member;
• a shoe, within said channel fo said jamb and positioned at a location directly opposing said pivot bar, for receiving said first end of said pivot bar, said shoe having a surface face opposing said pivot bar and including at least a first member stationary relative to said pivot bar and having a centrally located recess for receiving a rotatable movable member including a centrally located aperture having a configuration shaped to that of said cross-section of said pivot bar, said opposing face of said shoe being in a plane flush with said channel opening;
• and
• a flexible and resilient weatherseal gasket positioned on and entirely encircling said pivot bar between said shoe of said jamb and said first end of said sash frame member, having a centrally located aperture therethrough having a configuration shaped to that of said pivot bar cross-section, said gasket having a diameter or width at least equal to the width of said channel in said jamb, whereby said gasket is adapted to seal the junction between said pivot bar and said shoe, thereby preventing air penetration.