An existing low friction bearing leaked, and contamination caused premature failure of the EGR valve. A combination of low (-40°C) temperature, high temperature (250°C), low friction (less than 20g force) and 450 Kpa pressure seal was needed for this application. The existing Teflon® bearing was too costly, and had poor sealing capability.
IER Fujikura's rubber compounding and seal desig...
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