| 摘要 |
A sealed tube block assembly and method of making the same includes a tube block having two opposing walls with an axial bore therethrough. The bore is defined by first and second counterbores respectively in the walls and a reduced diameter serrated bore connecting the counterbores. The serrated bore is axially spaced from one of the counterbores by an axially tapered bore. The tapered bore has a maximum diameter less than the diameter of the adjacent counterbore but greater than the diameter of the serrated bore. An elastomeric seal is positioned in the tapered bore and a washer is positioned in the adjacent counterbore. The tube is formed with a first integral bead that seats in the opposite counterbore, and a second bead that seats in the counterbore which retains the washer and seal. The tube portion that contacts the washer and seal is finished as by swaging to provide an improved seal surface. The washer, tapered bore and tube form a controlled groove that insures correct compression of the seal after the second tube bead is formed.
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