| 摘要 |
A header plate (10, 14) for a heat exchanger (2) comprising, in combination: a plate (10, 14) having a tube side and a tank side; a plurality of apertures (16, 18) extending through the plate (10, 14); each aperture (16, 18) having a wall of non uniform diameter at at least three locations (30, 32, 36) including a seal (50) fixedly engaged within the aperture (16, 18).
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