Heat sink mechanical seals use a heat exchanger built directly into the stationary seal ring to control the temperature at the seal interface. This paper presents the latest analytical and experimental results showing the thermal deformation of the heat sink seal at the sealing interface. The results show that the virgin interface contact pattern (before wear) is non-conformally convex with point contact towards the outer diameter. These results are discussed in relation to positive and negative coning that is found in conventional seal rings.

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