| 摘要 |
A sealing device for a high-vacuum closure, such as used in a high-vacuum valve, where the surfaces effecting the seal are formed of metal. In forming the seal, a sealing member extends between and into contact with a pair of laterally spaced sealing surfaces. The surfaces on the sealing member which contact the sealing surfaces are rounded and have a radius of curvature equal to half the dimension of the sealing member between the sealing surfaces when it first contacts the surfaces during the closing step. The sealing surfaces can be frustoconical or spherical. When the device is closed, sealing force presses the sealing member between the sealing surfaces so that a relative rolling action takes place. Only elastic deformation occurs when the seal is effected.
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