| 摘要 |
<p>An apparatus and method for sealing a perimeter of a hole defined in a planar surface. A hermetic seal for sealing a hole provided in the cover of a housing includes a first seal body contacting a first surface of the cover and has a central passage. The first seal body includes a collar that extends through the hole in the cover and has an outer surface which bears against an inner surface of the hole. The collar has an inner surface that tapers away from the central passsage. A second seal body of the hermetic seal contacts the second surface of the cover and has a central passage. The second seal body includes a groove having an inner surface tapering toward the central passage. Upon engagement of the first and second seal bodies, a portion of the collar is received by the groove such that the tapering surface of he collar bears against the tapering surface of the groove. A conduit passes through the respective central passages of the first and second seal bodies and includes a first end, a second end opposing the first end, and a flange extending outwardly from the first end which contacts the first seal body. A fastener is coupled to the second end of the conduit and produces a compressive force on the first and second seal bodies sufficient to cause a portion of the outer surface of the collar to cold flow against the inner surface of the hole thereby sealing the perimeter of the hole in the cover.</p> |
